xb popular

Tags

seme papyrus

1boy 1cuntboy anger_vein animated_skeleton artist_name ass big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male boots bottom_sans bottomless bottomless_cuntboy brother brother/brother brother_and_brother brothers clothed clothing cobe-87 cuntboy cuntboysub dominant dominant_male domination duo ectobody ectobutt ectopussy english_text fontcest hoodie incest jacket larger_male male male/cuntboy maledom monochrome monster papyrus papyrus_(undertale) papysans partially_colored profanity punishment pussy pussy_juice sans sans_(undertale) seme_papyrus size_difference skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_sub smaller_sub_bigger_dom spank_marks spanking spanking_ass spanking_butt speech_bubble submissive submissive_cuntboy talking_to_another tears text text_bubble top_papyrus uke_sans undead undertale undertale_(series) video_games white_background yaoi
1boy 1cuntboy anger_vein animated_skeleton artist_name ass big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male boots bottom_sans bottomless bottomless_cuntboy brother brother/brother brother_and_brother brothers clothed clothing cobe-87 cuntboy cuntboysub dominant dominant_male domination duo ectobody ectobutt ectopussy english_text fontcest hoodie incest jacket larger_male male male/cuntboy maledom monochrome monster papyrus papyrus_(undertale) papysans partially_colored profanity punishment pussy pussy_juice sans sans_(undertale) seme_papyrus size_difference skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_sub smaller_sub_bigger_dom spank_marks spanking spanking_ass spanking_butt speech_bubble submissive submissive_cuntboy talking_to_another tears text text_bubble top_papyrus uke_sans undead undertale undertale_(series) video_games white_background yaoi
1:1 1:1_aspect_ratio 1boy 1cuntboy 2020s 2022 2d 2d_(artwork) animated_skeleton artist_name artist_watermark black_legwear blue_pussy bottom_sans brother brother/brother brother_and_brother brothers cuntboy digital_media_(artwork) duo ectopussy empath__life fingering fingering_another fingering_pussy fontcest gif grey_background hand_on_another's_face hand_on_face incest intraspecies legs_apart legwear male male/male monochrome monster monster_boy nude one_eye_closed papyrus papyrus_(undertale) papysans pussy sans sans_(undertale) seme_papyrus sequence sequential sibling_incest siblings simple_background sitting skeleton tel_a_friend top_papyrus twitter uke_sans undead undertale undertale_(series) video_game_character video_games watermark yaoi
1:1 1:1_aspect_ratio 1boy 1cuntboy 2020s 2022 2d 2d_(artwork) animated_skeleton artist_name artist_watermark black_legwear blue_pussy bottom_sans brother brother/brother brother_and_brother brothers cuntboy digital_media_(artwork) duo ectopussy empath__life fingering fingering_another fingering_pussy fontcest gif grey_background hand_on_another's_face hand_on_face incest intraspecies legs_apart legwear male male/male monochrome monster monster_boy nude one_eye_closed papyrus papyrus_(undertale) papysans pussy sans sans_(undertale) seme_papyrus sequence sequential sibling_incest siblings simple_background sitting skeleton tel_a_friend top_papyrus twitter uke_sans undead undertale undertale_(series) video_game_character video_games watermark yaoi
2017 2boys 2d animal animated_skeleton annoying_dog_(undertale) bottom_sans brother/brother brothers canid canine canis clothed clothed_male clothing comic comic_panel comic_sans digital_media dog domestic_dog english_text feral fontcest hoodie incest jacket lowest-of-dirt male male/male male_only monster pants_bulge papyrus_(font) papyrus_(undertale) papysans pinned_down sans_(undertale) seme_papyrus skeleton speech_bubble talking_to_another teeth text top_papyrus undead undertale undertale_(series) video_game_character video_games white_background yaoi
2017 2boys 2d animal animated_skeleton annoying_dog_(undertale) bottom_sans brother/brother brothers canid canine canis clothed clothed_male clothing comic comic_panel comic_sans digital_media dog domestic_dog english_text feral fontcest hoodie incest jacket lowest-of-dirt male male/male male_only monster pants_bulge papyrus_(font) papyrus_(undertale) papysans pinned_down sans_(undertale) seme_papyrus skeleton speech_bubble talking_to_another teeth text top_papyrus undead undertale undertale_(series) video_game_character video_games white_background yaoi
2010s 2017 2d 4boys animated_skeleton blue_blush blue_tongue blush bottom_sans bukkake clothed clothing cum cum_in_mouth cum_on_tongue digital_media ectotongue fangs finger_in_mouth fontcest gangbang grillby grillsans hand implied_incest lowest-of-dirt male male/male male_focus male_only monster multiple_boys one_eye_closed orange_cum orange_penis papyrus_(undertale) papysans penis red_background sans_(undertale) sanster seme_gaster seme_grillby seme_papyrus sex skeleton solo_focus tongue top_gaster top_grillby top_papyrus uke_sans undead undertale undertale_(series) unseen_character unseen_male unseen_male_face upper_body video_game_character video_games w.d._gaster yaoi
2010s 2017 2d 4boys animated_skeleton blue_blush blue_tongue blush bottom_sans bukkake clothed clothing cum cum_in_mouth cum_on_tongue digital_media ectotongue fangs finger_in_mouth fontcest gangbang grillby grillsans hand implied_incest lowest-of-dirt male male/male male_focus male_only monster multiple_boys one_eye_closed orange_cum orange_penis papyrus_(undertale) papysans penis red_background sans_(undertale) sanster seme_gaster seme_grillby seme_papyrus sex skeleton solo_focus tongue top_gaster top_grillby top_papyrus uke_sans undead undertale undertale_(series) unseen_character unseen_male unseen_male_face upper_body video_game_character video_games w.d._gaster yaoi
2020s 2022 2boys 2d 2d_(artwork) anal animated_skeleton artist_name artist_watermark begging_for_more blue_blush blush blush_lines blushing_male bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers carrying_another carrying_partner carrying_position clothed clothing comic_sans cussing digital_media_(artwork) dominant dominant_male duo ectoplasm empath__life english_text fontcest from_front_position glowing glowing_genitalia grey_background incest intraspecies male male/male male_only maledom malesub moaning monster monster_boy orange_blush papyrus papyrus_(font) papyrus_(undertale) papysans partially_colored penetration penetration_from_front profanity sans sans_(undertale) seme_papyrus sex sex_from_front sibling_incest siblings simple_background skeleton solid_color_background stand_and_carry_position standing submissive submissive_male suspended_congress swearing sweat tel_a_friend text top_papyrus twitter uke_sans undead undertale undertale_(series) video_game_character video_games watermark yaoi
2020s 2022 2boys 2d 2d_(artwork) anal animated_skeleton artist_name artist_watermark begging_for_more blue_blush blush blush_lines blushing_male bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers carrying_another carrying_partner carrying_position clothed clothing comic_sans cussing digital_media_(artwork) dominant dominant_male duo ectoplasm empath__life english_text fontcest from_front_position glowing glowing_genitalia grey_background incest intraspecies male male/male male_only maledom malesub moaning monster monster_boy orange_blush papyrus papyrus_(font) papyrus_(undertale) papysans partially_colored penetration penetration_from_front profanity sans sans_(undertale) seme_papyrus sex sex_from_front sibling_incest siblings simple_background skeleton solid_color_background stand_and_carry_position standing submissive submissive_male suspended_congress swearing sweat tel_a_friend text top_papyrus twitter uke_sans undead undertale undertale_(series) video_game_character video_games watermark yaoi
2020s 2022 2boys 2d 2d_(artwork) animated_skeleton artist_name beetleevil blue_blush blue_hoodie blue_jacket blush blushing_male bottom_sans brother brother/brother brother_and_brother brothers clothed clothing covering_mouth covering_own_mouth crying digital_media_(artwork) drooling duo ectopenis english_text evilbeetle eye_fucking eye_penetration fellatio fontcest genitals gloves heart-shaped_pupils heart_eyes holding_hands hooded_jacket hoodie incest intraspecies jacket male male/male male_only monster monster_boy multiple_views oral orange_blush orange_penis papyrus papyrus_(undertale) papysans penis penis_in_eye penis_in_mouth penis_through_clothing red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background skeleton skull_fucking soul soul_sex sucking_penis tears text top_papyrus twitter uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2020s 2022 2boys 2d 2d_(artwork) animated_skeleton artist_name beetleevil blue_blush blue_hoodie blue_jacket blush blushing_male bottom_sans brother brother/brother brother_and_brother brothers clothed clothing covering_mouth covering_own_mouth crying digital_media_(artwork) drooling duo ectopenis english_text evilbeetle eye_fucking eye_penetration fellatio fontcest genitals gloves heart-shaped_pupils heart_eyes holding_hands hooded_jacket hoodie incest intraspecies jacket male male/male male_only monster monster_boy multiple_views oral orange_blush orange_penis papyrus papyrus_(undertale) papysans penis penis_in_eye penis_in_mouth penis_through_clothing red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background skeleton skull_fucking soul soul_sex sucking_penis tears text top_papyrus twitter uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2017 2boys anal anal_penetration anal_sex animated_skeleton balls bed bedroom biting_pillow blanket blue_blush blue_body blush bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers bulge clothed clothing comic comic_page comic_panel crying crying_with_eyes_open dry_humping duo ectobody ectopenis edit edited erection erection_under_clothes fontcest glowing glowing_eye glowing_genitalia glowing_penis groping groping_from_behind hand_in_pants hand_under_clothes humping incest indoors intraspecies large_filesize laying_on_bed looking_at_another looking_at_each_other lying_on_bed male male/male male_only male_penetrated male_penetrating male_penetrating_male monochrome monster monster_boy on_bed on_side orange_balls orange_blush orange_body orange_penis orange_testicles papyrus papyrus_(undertale) papysans partially_colored penetration penis penis_in_anus profanity sans sans_(undertale) seme_papyrus sequence sequential sex sex_on_bed sibling_incest siblings skeleton sleeping sleeping_together supermuuh surprised surprised_expression sweat tears testicles text third-party_edit top_papyrus uke_sans undead under_blanket undertale undertale_(series) waking_up yaoi
2010s 2017 2boys anal anal_penetration anal_sex animated_skeleton balls bed bedroom biting_pillow blanket blue_blush blue_body blush bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers bulge clothed clothing comic comic_page comic_panel crying crying_with_eyes_open dry_humping duo ectobody ectopenis edit edited erection erection_under_clothes fontcest glowing glowing_eye glowing_genitalia glowing_penis groping groping_from_behind hand_in_pants hand_under_clothes humping incest indoors intraspecies large_filesize laying_on_bed looking_at_another looking_at_each_other lying_on_bed male male/male male_only male_penetrated male_penetrating male_penetrating_male monochrome monster monster_boy on_bed on_side orange_balls orange_blush orange_body orange_penis orange_testicles papyrus papyrus_(undertale) papysans partially_colored penetration penis penis_in_anus profanity sans sans_(undertale) seme_papyrus sequence sequential sex sex_on_bed sibling_incest siblings skeleton sleeping sleeping_together supermuuh surprised surprised_expression sweat tears testicles text third-party_edit top_papyrus uke_sans undead under_blanket undertale undertale_(series) waking_up yaoi
2010s 2017 2boys 2d 2d_(artwork) anal anal_penetration anal_sex animated_skeleton balls bed bedroom biting_pillow blanket blue_blush blue_body blush bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers bulge clothed clothing comic comic_page comic_panel crying crying_with_eyes_open digital_media_(artwork) dry_humping duo ectobody ectopenis edit edited erection erection_under_clothes fontcest glowing glowing_eye glowing_genitalia glowing_penis groping groping_from_behind hand_in_pants hand_under_clothes humping incest indoors intraspecies large_filesize long_image looking_at_another looking_at_each_other lying_on_bed male male/male male_only male_penetrated male_penetrating male_penetrating_male monochrome monster monster_boy multiple_images on_bed on_side orange_balls orange_blush orange_body orange_penis orange_testicles papyrus papyrus_(undertale) papysans partially_colored penetration penis penis_in_anus profanity sans sans_(undertale) seme_papyrus sequence sequential sex sex_on_bed sibling_incest siblings skeleton sleeping sleeping_together supermuuh surprised surprised_expression sweat tall_image tears testicles text third-party_edit top_papyrus uke_sans undead under_blanket undertale undertale_(series) video_games waking_up yaoi
2010s 2017 2boys 2d 2d_(artwork) anal anal_penetration anal_sex animated_skeleton balls bed bedroom biting_pillow blanket blue_blush blue_body blush bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers bulge clothed clothing comic comic_page comic_panel crying crying_with_eyes_open digital_media_(artwork) dry_humping duo ectobody ectopenis edit edited erection erection_under_clothes fontcest glowing glowing_eye glowing_genitalia glowing_penis groping groping_from_behind hand_in_pants hand_under_clothes humping incest indoors intraspecies large_filesize long_image looking_at_another looking_at_each_other lying_on_bed male male/male male_only male_penetrated male_penetrating male_penetrating_male monochrome monster monster_boy multiple_images on_bed on_side orange_balls orange_blush orange_body orange_penis orange_testicles papyrus papyrus_(undertale) papysans partially_colored penetration penis penis_in_anus profanity sans sans_(undertale) seme_papyrus sequence sequential sex sex_on_bed sibling_incest siblings skeleton sleeping sleeping_together supermuuh surprised surprised_expression sweat tall_image tears testicles text third-party_edit top_papyrus uke_sans undead under_blanket undertale undertale_(series) video_games waking_up yaoi
2010s 2017 2boys anal anal_penetration anal_sex animated_skeleton balls bed bedroom blanket blue_blush blue_body blush bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing comic comic_page comic_panel crying crying_with_eyes_open duo ectobody ectopenis fontcest glowing glowing_eye incest indoors intraspecies laying_on_bed lying_on_bed male male/male male_only male_penetrated male_penetrating male_penetrating_male monochrome monster monster_boy on_bed on_side orange_balls orange_blush orange_body orange_penis orange_testicles papyrus papyrus_(undertale) papysans partially_colored penetration penis penis_in_anus sans sans_(undertale) seme_papyrus sequence sequential sex sex_on_bed sibling_incest siblings skeleton supermuuh tears testicles top_papyrus uke_sans undead undertale undertale_(series) yaoi
2010s 2017 2boys anal anal_penetration anal_sex animated_skeleton balls bed bedroom blanket blue_blush blue_body blush bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing comic comic_page comic_panel crying crying_with_eyes_open duo ectobody ectopenis fontcest glowing glowing_eye incest indoors intraspecies laying_on_bed lying_on_bed male male/male male_only male_penetrated male_penetrating male_penetrating_male monochrome monster monster_boy on_bed on_side orange_balls orange_blush orange_body orange_penis orange_testicles papyrus papyrus_(undertale) papysans partially_colored penetration penis penis_in_anus sans sans_(undertale) seme_papyrus sequence sequential sex sex_on_bed sibling_incest siblings skeleton supermuuh tears testicles top_papyrus uke_sans undead undertale undertale_(series) yaoi
2010s 2017 2boys animated_skeleton bed bedroom blanket blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel crying crying_with_eyes_open duo fontcest glowing glowing_eye incest indoors laying_on_bed looking_at_another looking_at_each_other lying_on_bed male male/male male_only monochrome on_bed orange_blush papyrus papyrus_(undertale) papysans partially_colored profanity sans sans_(undertale) seme_papyrus sequence sequential skeleton supermuuh tears text top_papyrus uke_sans undead undertale undertale_(series) waking_up yaoi
2010s 2017 2boys animated_skeleton bed bedroom blanket blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel crying crying_with_eyes_open duo fontcest glowing glowing_eye incest indoors laying_on_bed looking_at_another looking_at_each_other lying_on_bed male male/male male_only monochrome on_bed orange_blush papyrus papyrus_(undertale) papysans partially_colored profanity sans sans_(undertale) seme_papyrus sequence sequential skeleton supermuuh tears text top_papyrus uke_sans undead undertale undertale_(series) waking_up yaoi
2010s 2017 2boys animated_skeleton bed bedroom biting_pillow blanket blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel crying duo fontcest glowing glowing_genitalia groping groping_from_behind hand_in_pants hand_under_clothes incest indoors laying_on_bed lying_on_bed male male/male male_only monochrome on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential skeleton supermuuh surprised surprised_expression tears top_papyrus uke_sans undead under_blanket undertale undertale_(series) yaoi
2010s 2017 2boys animated_skeleton bed bedroom biting_pillow blanket blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel crying duo fontcest glowing glowing_genitalia groping groping_from_behind hand_in_pants hand_under_clothes incest indoors laying_on_bed lying_on_bed male male/male male_only monochrome on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential skeleton supermuuh surprised surprised_expression tears top_papyrus uke_sans undead under_blanket undertale undertale_(series) yaoi
2010s 2017 2boys animated_skeleton bed bedroom biting_pillow blanket blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel crying duo fontcest glowing glowing_genitalia incest indoors laying_on_bed lying_on_bed male male/male male_only monochrome on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential skeleton supermuuh tears top_papyrus uke_sans undead under_blanket undertale undertale_(series) yaoi
2010s 2017 2boys animated_skeleton bed bedroom biting_pillow blanket blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel crying duo fontcest glowing glowing_genitalia incest indoors laying_on_bed lying_on_bed male male/male male_only monochrome on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential skeleton supermuuh tears top_papyrus uke_sans undead under_blanket undertale undertale_(series) yaoi
2010s 2017 2boys animated_skeleton bed bedroom biting_pillow blanket blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel crying duo fontcest glowing glowing_genitalia incest indoors laying_on_bed lying_on_bed male male/male male_only monochrome on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential skeleton supermuuh tears top_papyrus uke_sans undead under_blanket undertale undertale_(series) yaoi
2010s 2017 2boys animated_skeleton bed bedroom biting_pillow blanket blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel crying duo fontcest glowing glowing_genitalia incest indoors laying_on_bed lying_on_bed male male/male male_only monochrome on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential skeleton supermuuh tears top_papyrus uke_sans undead under_blanket undertale undertale_(series) yaoi
2010s 2017 2boys animated_skeleton bed bedroom blanket bottom_sans brother brother/brother brother_and_brother brothers bulge clothed clothing comic comic_page comic_panel dry_humping duo erection erection_under_clothes fontcest glowing glowing_genitalia humping incest indoors intraspecies laying_on_bed lying_on_bed male male/male male_only monochrome monster monster_boy on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential sibling_incest siblings skeleton supermuuh top_papyrus uke_sans undead under_blanket undertale undertale_(series) unseen_male_face yaoi
2010s 2017 2boys animated_skeleton bed bedroom blanket bottom_sans brother brother/brother brother_and_brother brothers bulge clothed clothing comic comic_page comic_panel dry_humping duo erection erection_under_clothes fontcest glowing glowing_genitalia humping incest indoors intraspecies laying_on_bed lying_on_bed male male/male male_only monochrome monster monster_boy on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential sibling_incest siblings skeleton supermuuh top_papyrus uke_sans undead under_blanket undertale undertale_(series) unseen_male_face yaoi
2010s 2017 2boys animated_skeleton bed bedroom blanket blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel duo fontcest incest indoors laying_on_bed lying_on_bed male male/male male_only monochrome on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential skeleton supermuuh top_papyrus uke_sans undead undertale undertale_(series) yaoi
2010s 2017 2boys animated_skeleton bed bedroom blanket blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel duo fontcest incest indoors laying_on_bed lying_on_bed male male/male male_only monochrome on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential skeleton supermuuh top_papyrus uke_sans undead undertale undertale_(series) yaoi
2010s 2017 2boys animated_skeleton bed bedroom blanket bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel duo fontcest glowing glowing_genitalia incest indoors laying_on_bed lying_on_bed male male/male male_only monochrome on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential skeleton supermuuh top_papyrus uke_sans undead under_blanket undertale undertale_(series) unseen_male_face yaoi
2010s 2017 2boys animated_skeleton bed bedroom blanket bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel duo fontcest glowing glowing_genitalia incest indoors laying_on_bed lying_on_bed male male/male male_only monochrome on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential skeleton supermuuh top_papyrus uke_sans undead under_blanket undertale undertale_(series) unseen_male_face yaoi
2010s 2017 2boys animated_skeleton bed bedroom blanket blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel duo fontcest incest indoors laying_on_bed lying_on_bed male male/male male_only monochrome on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential skeleton solo_focus supermuuh sweat top_papyrus uke_sans undead undertale undertale_(series) yaoi
2010s 2017 2boys animated_skeleton bed bedroom blanket blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothing comic comic_page comic_panel duo fontcest incest indoors laying_on_bed lying_on_bed male male/male male_only monochrome on_bed papyrus papyrus_(undertale) papysans partially_colored sans sans_(undertale) seme_papyrus sequence sequential skeleton solo_focus supermuuh sweat top_papyrus uke_sans undead undertale undertale_(series) yaoi
2010s 2boys 2d 2d_(artwork) anal animated_skeleton bigger_male bigger_penetrating bigger_penetrating_smaller blush blush_lines bottom_on_top bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing collar comic comic_page comic_panel digital_media_(artwork) edit edited eli-sin-g english_text fangs fontcest incest intraspecies kolesjoie larger_male larger_penetrating larger_penetrating_smaller long_image male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy multiple_images papyrus papyrus_(undertale) papysans penetration sans sans_(undertale) seme_papyrus sequence sequential service_top sex sibling_incest siblings skeleton smaller_male smaller_penetrated speech_bubble sweat talking tall_image text text_bubble third-party_edit top_papyrus uke_sans undead undertale undertale_(series) video_games yaoi
2010s 2boys 2d 2d_(artwork) anal animated_skeleton bigger_male bigger_penetrating bigger_penetrating_smaller blush blush_lines bottom_on_top bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing collar comic comic_page comic_panel digital_media_(artwork) edit edited eli-sin-g english_text fangs fontcest incest intraspecies kolesjoie larger_male larger_penetrating larger_penetrating_smaller long_image male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy multiple_images papyrus papyrus_(undertale) papysans penetration sans sans_(undertale) seme_papyrus sequence sequential service_top sex sibling_incest siblings skeleton smaller_male smaller_penetrated speech_bubble sweat talking tall_image text text_bubble third-party_edit top_papyrus uke_sans undead undertale undertale_(series) video_games yaoi
2010s 2boys anal animated_skeleton bigger_male bigger_penetrating bigger_penetrating_smaller blush blush_lines bottom_on_top bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing collar comic comic_page comic_panel eli-sin-g english_text fangs fontcest incest intraspecies kolesjoie larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy papyrus papyrus_(undertale) papysans penetration sans sans_(undertale) seme_papyrus sequence sequential service_top sex sibling_incest siblings skeleton smaller_male smaller_penetrated speech_bubble sweat text text_bubble top_papyrus uke_sans undead undertale undertale_(series) yaoi
2010s 2boys anal animated_skeleton bigger_male bigger_penetrating bigger_penetrating_smaller blush blush_lines bottom_on_top bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing collar comic comic_page comic_panel eli-sin-g english_text fangs fontcest incest intraspecies kolesjoie larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy papyrus papyrus_(undertale) papysans penetration sans sans_(undertale) seme_papyrus sequence sequential service_top sex sibling_incest siblings skeleton smaller_male smaller_penetrated speech_bubble sweat text text_bubble top_papyrus uke_sans undead undertale undertale_(series) yaoi
2010s 2boys animated_skeleton blush blush_lines bottom_sans brother brother/brother brother_and_brother brothers clothed clothing collar comic comic_page comic_panel eli-sin-g english_text fangs fontcest incest intraspecies kolesjoie male male/male male_only monster monster_boy papyrus papyrus_(undertale) papysans sans sans_(undertale) seme_papyrus sequence sequential sibling_incest siblings skeleton speech_bubble sweat text text_bubble top_papyrus uke_sans undead undertale undertale_(series) yaoi
2010s 2boys animated_skeleton blush blush_lines bottom_sans brother brother/brother brother_and_brother brothers clothed clothing collar comic comic_page comic_panel eli-sin-g english_text fangs fontcest incest intraspecies kolesjoie male male/male male_only monster monster_boy papyrus papyrus_(undertale) papysans sans sans_(undertale) seme_papyrus sequence sequential sibling_incest siblings skeleton speech_bubble sweat text text_bubble top_papyrus uke_sans undead undertale undertale_(series) yaoi
2010s 2boys animated_skeleton blush blush_lines bottom_sans brother brother/brother brother_and_brother brothers clothed clothing collar comic comic_page comic_panel eli-sin-g english_text fangs fontcest incest intraspecies kolesjoie male male/male male_only monster monster_boy papyrus papyrus_(undertale) papysans sans sans_(undertale) seme_papyrus sequence sequential sibling_incest siblings skeleton speech_bubble sweat text text_bubble top_papyrus uke_sans undead undertale undertale_(series) yaoi
2010s 2boys animated_skeleton blush blush_lines bottom_sans brother brother/brother brother_and_brother brothers clothed clothing collar comic comic_page comic_panel eli-sin-g english_text fangs fontcest incest intraspecies kolesjoie male male/male male_only monster monster_boy papyrus papyrus_(undertale) papysans sans sans_(undertale) seme_papyrus sequence sequential sibling_incest siblings skeleton speech_bubble sweat text text_bubble top_papyrus uke_sans undead undertale undertale_(series) yaoi
2010s 2017 animated_skeleton begging begging_for_more blush boltheeye bottom_sans brother brother/brother brother_and_brother brothers crazy-bol crying duo english_text fontcest incest legs_apart legs_spread male monster papyrus papyrus_(undertale) papysans pocket_pussy portal_sex sans sans_(undertale) seme_papyrus sex sex_toy skeleton solo_focus tears text top_papyrus trembling trembling_legs uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2010s 2017 animated_skeleton begging begging_for_more blush boltheeye bottom_sans brother brother/brother brother_and_brother brothers crazy-bol crying duo english_text fontcest incest legs_apart legs_spread male monster papyrus papyrus_(undertale) papysans pocket_pussy portal_sex sans sans_(undertale) seme_papyrus sex sex_toy skeleton solo_focus tears text top_papyrus trembling trembling_legs uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2020s 2023 2boys 2d animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying dazed digital_media dominant dominant_male duo ectopenis ectoplasm ectotongue edit edited english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils heart_eyes incest intraspecies large_filesize long_image male male/male male_only maledom malesub monster monster_boy multiple_images nude nude_male orange_blush orange_penis overstimulation papyrus papyrus_(undertale) papysans partially_colored penetration penis sans sans_(undertale) seme_papyrus sequence sequential sequential_art sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears text third-party_edit thrusting tongue top_papyrus trembling trembling_legs uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2020s 2023 2boys 2d animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying dazed digital_media dominant dominant_male duo ectopenis ectoplasm ectotongue edit edited english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils heart_eyes incest intraspecies large_filesize long_image male male/male male_only maledom malesub monster monster_boy multiple_images nude nude_male orange_blush orange_penis overstimulation papyrus papyrus_(undertale) papysans partially_colored penetration penis sans sans_(undertale) seme_papyrus sequence sequential sequential_art sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears text third-party_edit thrusting tongue top_papyrus trembling trembling_legs uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2020s 2023 2boys 2d animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying dazed digital_media dominant dominant_male duo ectopenis ectoplasm ectotongue edit edited english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils heart_eyes incest intraspecies large_filesize long_image male male/male male_only maledom malesub monster monster_boy multiple_images nude nude_male orange_blush orange_penis overstimulation papyrus papyrus_(undertale) papysans partially_colored penetration penis sans sans_(undertale) seme_papyrus sequence sequential sequential_art sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tall_image tears text third-party_edit thrusting tongue top_papyrus trembling trembling_legs uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2020s 2023 2boys 2d animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying dazed digital_media dominant dominant_male duo ectopenis ectoplasm ectotongue edit edited english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils heart_eyes incest intraspecies large_filesize long_image male male/male male_only maledom malesub monster monster_boy multiple_images nude nude_male orange_blush orange_penis overstimulation papyrus papyrus_(undertale) papysans partially_colored penetration penis sans sans_(undertale) seme_papyrus sequence sequential sequential_art sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tall_image tears text third-party_edit thrusting tongue top_papyrus trembling trembling_legs uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2020s 2021 2boys 2d 2d_(artwork) anal animated_skeleton aroused artist_name beetleevil begging biting_clothes biting_shirt blue_blush blue_tongue blush blushing_male bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers carrying carrying_another carrying_partner carrying_position clothed clothing crotch_rub cussing digital_media_(artwork) dirty_talk dry_humping duo ectopenis ectoplasm ectotongue edit edited english_text evilbeetle fontcest glowing_genitalia grabbing_wrist grey_background hand_on_crotch heart-shaped_pupils heart_eyes humping incest intraspecies large_filesize long_image male male/male male_only male_penetrated male_penetrating moaning monochrome monster monster_boy multiple_images orange_blush orange_shirt pants_around_legs pants_around_thighs pants_down papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male partially_colored penetration pervert pervert_male profanity reverse_stand_and_carry_position reverse_suspended_congress sans sans_(undertale) seme_papyrus sequence sequential sex shirt_up sibling_incest siblings simple_background skeleton soul soul_sex speech_bubble spoken_musical_note stand_and_carry_position stealth_sex swearing talking talking_to_another talking_to_partner tall_image tears tears_of_pleasure text text_bubble third-party_edit top_papyrus touching_crotch trembling twitter uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2020s 2021 2boys 2d 2d_(artwork) anal animated_skeleton aroused artist_name beetleevil begging biting_clothes biting_shirt blue_blush blue_tongue blush blushing_male bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers carrying carrying_another carrying_partner carrying_position clothed clothing crotch_rub cussing digital_media_(artwork) dirty_talk dry_humping duo ectopenis ectoplasm ectotongue edit edited english_text evilbeetle fontcest glowing_genitalia grabbing_wrist grey_background hand_on_crotch heart-shaped_pupils heart_eyes humping incest intraspecies large_filesize long_image male male/male male_only male_penetrated male_penetrating moaning monochrome monster monster_boy multiple_images orange_blush orange_shirt pants_around_legs pants_around_thighs pants_down papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male partially_colored penetration pervert pervert_male profanity reverse_stand_and_carry_position reverse_suspended_congress sans sans_(undertale) seme_papyrus sequence sequential sex shirt_up sibling_incest siblings simple_background skeleton soul soul_sex speech_bubble spoken_musical_note stand_and_carry_position stealth_sex swearing talking talking_to_another talking_to_partner tall_image tears tears_of_pleasure text text_bubble third-party_edit top_papyrus touching_crotch trembling twitter uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2d 2d_(artwork) animated_skeleton anon anonymous blue_blush blue_tongue blush bottom_sans bouncing_penis brother brother/brother brother_and_brother brother_penetrating_brother brothers comic cum cum_in_mouth digital_media_(artwork) duo ectopenis edit edited eli-sin-g english_text fellatio finger_snap fingers_interlocked fontcest hypnotized incest interlocked_fingers intertwined_fingers irrumatio kolesjoie long_image male mind_control monster mouthfuck multiple_images orange_blush orange_penis papyrus papyrus_(undertale) papysans penetration penis red_penis sans sans_(undertale) seme_papyrus sequence sequential sex skeleton swallowing_cum sweat talking tall_image text third-party_edit tongue tongue_out top_papyrus tumblr uke_sans undead undertale undertale_(series) veiny_penis video_games yaoi
2010s 2d 2d_(artwork) animated_skeleton anon anonymous blue_blush blue_tongue blush bottom_sans bouncing_penis brother brother/brother brother_and_brother brother_penetrating_brother brothers comic cum cum_in_mouth digital_media_(artwork) duo ectopenis edit edited eli-sin-g english_text fellatio finger_snap fingers_interlocked fontcest hypnotized incest interlocked_fingers intertwined_fingers irrumatio kolesjoie long_image male mind_control monster mouthfuck multiple_images orange_blush orange_penis papyrus papyrus_(undertale) papysans penetration penis red_penis sans sans_(undertale) seme_papyrus sequence sequential sex skeleton swallowing_cum sweat talking tall_image text third-party_edit tongue tongue_out top_papyrus tumblr uke_sans undead undertale undertale_(series) veiny_penis video_games yaoi
! !? ... 13thcatofthegate 2010s 2018 2boys 2d 2d_(artwork) 2males after_sex all_fours anal animated_skeleton arms_around_another arms_around_another's_neck arms_around_neck bedroom bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_eye blue_penis blue_tongue blush bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothed_male comic comic_page comic_panel comic_sans completely_nude completely_nude_male crying cum cum_on_sheets digital_media_(artwork) doggy_position drooling duo ectopenis ectotongue edit edited ejaculation english_text extremely_large_filesize fontcest from_behind_position genitals glowing_eye hand_on_another's_chest hand_on_chest handjob handjob_while_penetrating hands_around_neck hugged_from_behind hugging incest indoors kissing kissing_cheek large_filesize larger_male larger_penetrating larger_penetrating_smaller laying_down licking_neck licking_tongue long_image looking_at_another looking_at_partner lying_down making_out male male/male male_only male_penetrated male_penetrating male_penetrating_male monster multiple_images nude nude_male orange_blush orange_eye orange_penis orange_tongue orgasm papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male partially_colored penetration penetration_from_behind penis saliva_string saliva_trail sans sans_(undertale) seme_papyrus sequence sequential sex sex_from_behind shirt_removed shorter_male skeleton sleeping sleeping_nude sleeping_together smaller_male smaller_penetrated soul soul_sex speech_bubble spoken_ellipsis spoken_exclamation_mark spoken_exclamation_point taking_off_clothes talking talking_to_another tall_image taller_male tears text text_bubble third-party_edit tongue tongue_out top_papyrus topless topless_male twitter uke_sans undead undertale undertale_(series) undressed undressing undressing_another undressing_partner video_game_character video_games wake_up yaoi zzz
! !? ... 13thcatofthegate 2010s 2018 2boys 2d 2d_(artwork) 2males after_sex all_fours anal animated_skeleton arms_around_another arms_around_another's_neck arms_around_neck bedroom bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_eye blue_penis blue_tongue blush bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothed_male comic comic_page comic_panel comic_sans completely_nude completely_nude_male crying cum cum_on_sheets digital_media_(artwork) doggy_position drooling duo ectopenis ectotongue edit edited ejaculation english_text extremely_large_filesize fontcest from_behind_position genitals glowing_eye hand_on_another's_chest hand_on_chest handjob handjob_while_penetrating hands_around_neck hugged_from_behind hugging incest indoors kissing kissing_cheek large_filesize larger_male larger_penetrating larger_penetrating_smaller laying_down licking_neck licking_tongue long_image looking_at_another looking_at_partner lying_down making_out male male/male male_only male_penetrated male_penetrating male_penetrating_male monster multiple_images nude nude_male orange_blush orange_eye orange_penis orange_tongue orgasm papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male partially_colored penetration penetration_from_behind penis saliva_string saliva_trail sans sans_(undertale) seme_papyrus sequence sequential sex sex_from_behind shirt_removed shorter_male skeleton sleeping sleeping_nude sleeping_together smaller_male smaller_penetrated soul soul_sex speech_bubble spoken_ellipsis spoken_exclamation_mark spoken_exclamation_point taking_off_clothes talking talking_to_another tall_image taller_male tears text text_bubble third-party_edit tongue tongue_out top_papyrus topless topless_male twitter uke_sans undead undertale undertale_(series) undressed undressing undressing_another undressing_partner video_game_character video_games wake_up yaoi zzz
1boy 1cuntboy 2010s 2016 2d 2d_(artwork) animated_skeleton blanket bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers comic comic_page couch couch_sex cum cum_in_pussy cuntboy cuntboysub digital_media_(artwork) dominant_male duo ectopenis ectopussy edit edited eli-sin-g english_text fontcest from_front_position imminent_sex incest intraspecies kolesjoie long_image male male/cuntboy male_penetrating maledom monster monster_boy multiple_images papyrus papyrus_(font) papyrus_(undertale) papysans pussy sans sans_(undertale) seme_papyrus sequence sequential sex sibling_incest siblings skeleton sofa submissive_cuntboy tall_image text third-party_edit top_papyrus tumblr uke_sans undead undertale undertale_(series) veiny_penis video_games yaoi
1boy 1cuntboy 2010s 2016 2d 2d_(artwork) animated_skeleton blanket bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers comic comic_page couch couch_sex cum cum_in_pussy cuntboy cuntboysub digital_media_(artwork) dominant_male duo ectopenis ectopussy edit edited eli-sin-g english_text fontcest from_front_position imminent_sex incest intraspecies kolesjoie long_image male male/cuntboy male_penetrating maledom monster monster_boy multiple_images papyrus papyrus_(font) papyrus_(undertale) papysans pussy sans sans_(undertale) seme_papyrus sequence sequential sex sibling_incest siblings skeleton sofa submissive_cuntboy tall_image text third-party_edit top_papyrus tumblr uke_sans undead undertale undertale_(series) veiny_penis video_games yaoi
1boy 1cuntboy 2010s 2017 2d 2d_(artwork) animated_skeleton begging_to_stop blue_blush blue_body blush bottom_sans broken_glass brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothed_male comic comic_page comic_panel couch couch_sex crying cuntboy cuntboy_penetrated cuntboysub digital_media_(artwork) dominant dominant_male domination dubious_consent duo ectobody ectopenis ectopussy ectotongue edit edited english_text fontcest from_front_position genitals glass glowing_eye grabbing_clothing holding_glass incest intraspecies large_filesize leg_over_shoulder licking long_image male male/cuntboy male_only male_penetrating male_penetrating_cuntboy maledom missionary_position monster monster_boy multiple_images non-con non-consensual noncon nonconsensual onomatopoeia orange_blush orange_penis orange_tongue pants_around_one_leg papyrus papyrus_(undertale) papysans penetration penis_through_fly pleading profanity pussy questionable_consent rape sans sans_(undertale) seme_papyrus sequence sequential sex sex_on_couch sibling_incest siblings skeleton sofa soul soul_sex speech_bubble submissive submissive_cuntboy supermuuh sweat talking tall_image tears teleport text text_bubble third-party_edit top_papyrus tumblr uke_sans undead undertale undertale_(series) unzipped unzipped_pants vaginal veiny_penis video_game_character video_games yandere yaoi
1boy 1cuntboy 2010s 2017 2d 2d_(artwork) animated_skeleton begging_to_stop blue_blush blue_body blush bottom_sans broken_glass brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothed_male comic comic_page comic_panel couch couch_sex crying cuntboy cuntboy_penetrated cuntboysub digital_media_(artwork) dominant dominant_male domination dubious_consent duo ectobody ectopenis ectopussy ectotongue edit edited english_text fontcest from_front_position genitals glass glowing_eye grabbing_clothing holding_glass incest intraspecies large_filesize leg_over_shoulder licking long_image male male/cuntboy male_only male_penetrating male_penetrating_cuntboy maledom missionary_position monster monster_boy multiple_images non-con non-consensual noncon nonconsensual onomatopoeia orange_blush orange_penis orange_tongue pants_around_one_leg papyrus papyrus_(undertale) papysans penetration penis_through_fly pleading profanity pussy questionable_consent rape sans sans_(undertale) seme_papyrus sequence sequential sex sex_on_couch sibling_incest siblings skeleton sofa soul soul_sex speech_bubble submissive submissive_cuntboy supermuuh sweat talking tall_image tears teleport text text_bubble third-party_edit top_papyrus tumblr uke_sans undead undertale undertale_(series) unzipped unzipped_pants vaginal veiny_penis video_game_character video_games yandere yaoi
2020s 2023 2boys anal animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket blush boots bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers duo ectopenis ectoplasm fontcest gloves hooded_jacket hoodie humanoid incest intraspecies jacket larger_male larger_penetrating male male/male male_only male_penetrating monster monster_boy papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penis red_boots red_gloves red_penis s2ames2 sans sans_(undertale) seme_papyrus sex sibling_incest siblings sink size_difference skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks standing sweat top_papyrus uke_sans undead undertale undertale_(series) white_background yaoi
2020s 2023 2boys anal animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket blush boots bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers duo ectopenis ectoplasm fontcest gloves hooded_jacket hoodie humanoid incest intraspecies jacket larger_male larger_penetrating male male/male male_only male_penetrating monster monster_boy papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penis red_boots red_gloves red_penis s2ames2 sans sans_(undertale) seme_papyrus sex sibling_incest siblings sink size_difference skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks standing sweat top_papyrus uke_sans undead undertale undertale_(series) white_background yaoi
2020s 2023 2boys against_tree anal animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket blush bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers duo ectopenis ectoplasm fontcest gloves grabbing_arm grabbing_from_behind hooded_jacket hoodie humanoid incest intraspecies jacket larger_male larger_penetrating male male/male male_only male_penetrating monster monster_boy motion_lines outdoors papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penis public public_sex red_gloves s2ames2 sans sans_(undertale) seme_papyrus sex sex_from_behind sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom standing sweat thrusting top_papyrus tree uke_sans undead undertale undertale_(series) white_glove white_gloves yaoi
2020s 2023 2boys against_tree anal animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket blush bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers duo ectopenis ectoplasm fontcest gloves grabbing_arm grabbing_from_behind hooded_jacket hoodie humanoid incest intraspecies jacket larger_male larger_penetrating male male/male male_only male_penetrating monster monster_boy motion_lines outdoors papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penis public public_sex red_gloves s2ames2 sans sans_(undertale) seme_papyrus sex sex_from_behind sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom standing sweat thrusting top_papyrus tree uke_sans undead undertale undertale_(series) white_glove white_gloves yaoi
2020s 2023 2boys animated_skeleton bedroom big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male blue_hoodie blue_jacket boots bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brothers duo ectopenis ectoplasm fellatio fellatio_pov fontcest hooded_jacket hoodie humanoid incest indoors intraspecies jacket japanese_text larger_male licking licking_balls licking_penis licking_testicles male male/male male_focus male_only male_penetrating male_pov monster monster_boy papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penis pov red_boots red_penis s2ames2 sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_sub smaller_sub_bigger_dom solo_focus text top_papyrus trembling trembling_legs uke_sans undead undertale undertale_(series) unseen_male_face yaoi
2020s 2023 2boys animated_skeleton bedroom big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male blue_hoodie blue_jacket boots bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brothers duo ectopenis ectoplasm fellatio fellatio_pov fontcest hooded_jacket hoodie humanoid incest indoors intraspecies jacket japanese_text larger_male licking licking_balls licking_penis licking_testicles male male/male male_focus male_only male_penetrating male_pov monster monster_boy papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penis pov red_boots red_penis s2ames2 sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_sub smaller_sub_bigger_dom solo_focus text top_papyrus trembling trembling_legs uke_sans undead undertale undertale_(series) unseen_male_face yaoi
2020s 2023 2boys animated_skeleton arm_support big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket boots bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers couch couch_sex duo ectopenis ectoplasm ectopussy fontcest from_front_position furniture gloves green_couch hooded_jacket hoodie humanoid incest indoors intraspecies jacket japanese_text larger_male larger_penetrating legs_up male male/male male_only male_penetrating missionary_position monster monster_boy on_couch on_sofa papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penetration_from_front penis pussy red_boots red_gloves red_penis s2ames2 sans sans_(undertale) seme_papyrus sex sex_from_front sex_on_couch sex_on_sofa sibling_incest siblings skeleton slippers small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks sofa spread_legs text top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face white_gloves white_socks yaoi
2020s 2023 2boys animated_skeleton arm_support big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket boots bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers couch couch_sex duo ectopenis ectoplasm ectopussy fontcest from_front_position furniture gloves green_couch hooded_jacket hoodie humanoid incest indoors intraspecies jacket japanese_text larger_male larger_penetrating legs_up male male/male male_only male_penetrating missionary_position monster monster_boy on_couch on_sofa papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penetration_from_front penis pussy red_boots red_gloves red_penis s2ames2 sans sans_(undertale) seme_papyrus sex sex_from_front sex_on_couch sex_on_sofa sibling_incest siblings skeleton slippers small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks sofa spread_legs text top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face white_gloves white_socks yaoi
2020s 2022 2boys anal animated_skeleton bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket bottom_on_top bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers duo ectopenis ectoplasm fontcest gloves hooded_jacket hoodie humanoid incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller larger_sub male male/male male_only male_penetrating monster monster_boy papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penis power_bottom red_gloves red_penis s2ames2 sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton smaller_dom smaller_penetrated socks submissive_top top_papyrus trembling uke_sans undead undertale undertale_(series) white_background white_socks yaoi
2020s 2022 2boys anal animated_skeleton bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket bottom_on_top bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers duo ectopenis ectoplasm fontcest gloves hooded_jacket hoodie humanoid incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller larger_sub male male/male male_only male_penetrating monster monster_boy papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penis power_bottom red_gloves red_penis s2ames2 sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton smaller_dom smaller_penetrated socks submissive_top top_papyrus trembling uke_sans undead undertale undertale_(series) white_background white_socks yaoi
2020s 2022 2boys anal animated_skeleton big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_penis blush boots bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers duo ectopenis ectoplasm fontcest footwear gloves hooded_jacket hoodie humanoid incest intraspecies jacket larger_male larger_penetrating laying_on_side lying_on_side male male/male male_only male_penetrating monster monster_boy motion_lines on_side papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penis penis_size_difference red_boots red_gloves red_penis s2ames2 sans sans_(undertale) seme_papyrus sex sex_from_behind sibling_incest siblings simple_background size_difference skeleton small_penis small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks thrusting top_papyrus trembling uke_sans undead undertale undertale_(series) white_background white_socks yaoi
2020s 2022 2boys anal animated_skeleton big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_penis blush boots bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers duo ectopenis ectoplasm fontcest footwear gloves hooded_jacket hoodie humanoid incest intraspecies jacket larger_male larger_penetrating laying_on_side lying_on_side male male/male male_only male_penetrating monster monster_boy motion_lines on_side papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penis penis_size_difference red_boots red_gloves red_penis s2ames2 sans sans_(undertale) seme_papyrus sex sex_from_behind sibling_incest siblings simple_background size_difference skeleton small_penis small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks thrusting top_papyrus trembling uke_sans undead undertale undertale_(series) white_background white_socks yaoi
2023 2boys 2d anal animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying dazed digital_media_(artwork) dominant dominant_male duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest from_front_position genitals grabbing_leg incest intraspecies male male/male male_only maledom malesub monster monster_boy nude nude_male orange_blush orange_penis overstimulation papyrus papyrus_(undertale) papysans penetration penis sans sans_(undertale) seme_papyrus sequence sequential sequential_art sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears text thrusting tongue top_papyrus trembling trembling_legs uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2023 2boys 2d anal animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers commission completely_nude completely_nude_male crying dazed digital_media_(artwork) dominant dominant_male duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest from_front_position genitals grabbing_leg incest intraspecies male male/male male_only maledom malesub monster monster_boy nude nude_male orange_blush orange_penis overstimulation papyrus papyrus_(undertale) papysans penetration penis sans sans_(undertale) seme_papyrus sequence sequential sequential_art sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears text thrusting tongue top_papyrus trembling trembling_legs uke_sans undead undertale undertale_(series) video_game_character video_games yaoi