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1girl ahe_gao ahegao arched_back ass ass_cutout ass_up ass_up_face_down backless backless_bottomwear backless_clothes backless_clothing backless_outfit backless_pants bare_ass bottom_on_top bottom_up bottom_up_top_down breast_squish breasts crotchless crotchless_bodysuit crotchless_clothes crotchless_clothing crotchless_outfit excessive_genital_fluids excessive_pussy_juice face_down face_down_ass_up female_focus female_only fuck_machine fucked_silly high_heels holding_on looking_back looking_pleasured looking_up open_mouth overwatch pleasure pleasure_face pleasured pleasured_face running_makeup running_mascara runny_makeup runny_mascara scratch scratched scratched_floor scratches scratches_on_floor scratching scratching_floor sex_machine spread_legs sticking_ass_out sticking_out_ass top-down_bottom-up top_down turk128 widowmaker widowmaker_(overwatch)
1girl ahe_gao ahegao arched_back ass ass_cutout ass_up ass_up_face_down backless backless_bottomwear backless_clothes backless_clothing backless_outfit backless_pants bare_ass bottom_on_top bottom_up bottom_up_top_down breast_squish breasts crotchless crotchless_bodysuit crotchless_clothes crotchless_clothing crotchless_outfit excessive_genital_fluids excessive_pussy_juice face_down face_down_ass_up female_focus female_only fuck_machine fucked_silly high_heels holding_on looking_back looking_pleasured looking_up open_mouth overwatch pleasure pleasure_face pleasured pleasured_face running_makeup running_mascara runny_makeup runny_mascara scratch scratched scratched_floor scratches scratches_on_floor scratching scratching_floor sex_machine spread_legs sticking_ass_out sticking_out_ass top-down_bottom-up top_down turk128 widowmaker widowmaker_(overwatch)
1boy 1cuntboy 2010s 2015 2d 2d_(artwork) animated_skeleton bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_clitoris blue_jacket blue_pussy blush bottom_on_top bottom_sans bottomwear brother brother/brother brother_and_brother brother_penetrating_brother brothers brown_background clitoris clothed clothing cuntboy cuntboy_penetrated digital_media_(artwork) drooling duo ectopenis ectopussy fontcest genitals gloves glowing glowing_genitalia glowing_penis heart-shaped_pupils heart_eyes incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller male male/cuntboy male_only male_penetrating male_penetrating_cuntboy monster monster_boy orange_blush orange_penis papyrus papyrus_(undertale) papysans penetration penetration_through_clothes penis penis_through_clothing pussy pussy_through_clothing red_gloves royalstash sans sans_(undertale) seme_papyrus sex sex_through_clothes sibling_incest siblings simple_background sitting skeleton smaller_cuntboy smaller_penetrated solid_color_background text top_papyrus topwear uke_sans undead undertale undertale_(series) vaginal vaginal_penetration vaginal_sex video_game_character video_games yaoi
1boy 1cuntboy 2010s 2015 2d 2d_(artwork) animated_skeleton bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_clitoris blue_jacket blue_pussy blush bottom_on_top bottom_sans bottomwear brother brother/brother brother_and_brother brother_penetrating_brother brothers brown_background clitoris clothed clothing cuntboy cuntboy_penetrated digital_media_(artwork) drooling duo ectopenis ectopussy fontcest genitals gloves glowing glowing_genitalia glowing_penis heart-shaped_pupils heart_eyes incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller male male/cuntboy male_only male_penetrating male_penetrating_cuntboy monster monster_boy orange_blush orange_penis papyrus papyrus_(undertale) papysans penetration penetration_through_clothes penis penis_through_clothing pussy pussy_through_clothing red_gloves royalstash sans sans_(undertale) seme_papyrus sex sex_through_clothes sibling_incest siblings simple_background sitting skeleton smaller_cuntboy smaller_penetrated solid_color_background text top_papyrus topwear uke_sans undead undertale undertale_(series) vaginal vaginal_penetration vaginal_sex video_game_character video_games yaoi
2boys 2d 2d_(artwork) after_penetration after_sex ahegao anal animated_skeleton arm_support ass ass_grab bad_id bad_tumblr_id bigger_penetrating blue_blush blue_hoodie blue_jacket blue_tongue blush bone bottom_on_top bottom_sans bottomless brother brother/brother brother_and_brother brothers clothed clothed_male clothed_sex clothing cum cum_leaking cum_trail digital_media_(artwork) drooling duo ectopenis ectoplasm ectotongue erection facing_another fontcest fully_clothed fully_clothed_male genital_fluids genitals gloves heart heart-shaped_pupils heart_eyes hooded_jacket hoodie humanoid humanoid_penis incest intraspecies jacket kneel kneeling larger_penetrating larger_penetrating_smaller looking_at_another looking_at_partner male male/male male_ahegao male_only male_penetrating mastery_position monster monster_boy open_mouth orange_blush orange_penis panting papyrus papyrus_(undertale) papysans partially_clothed penis penis_through_clothing power_bottom red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings sitting skeleton smaller_penetrated spoopy-gaster straddling submissive_top sweat third-party_source tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games visible_breath white_background yaoi
2boys 2d 2d_(artwork) after_penetration after_sex ahegao anal animated_skeleton arm_support ass ass_grab bad_id bad_tumblr_id bigger_penetrating blue_blush blue_hoodie blue_jacket blue_tongue blush bone bottom_on_top bottom_sans bottomless brother brother/brother brother_and_brother brothers clothed clothed_male clothed_sex clothing cum cum_leaking cum_trail digital_media_(artwork) drooling duo ectopenis ectoplasm ectotongue erection facing_another fontcest fully_clothed fully_clothed_male genital_fluids genitals gloves heart heart-shaped_pupils heart_eyes hooded_jacket hoodie humanoid humanoid_penis incest intraspecies jacket kneel kneeling larger_penetrating larger_penetrating_smaller looking_at_another looking_at_partner male male/male male_ahegao male_only male_penetrating mastery_position monster monster_boy open_mouth orange_blush orange_penis panting papyrus papyrus_(undertale) papysans partially_clothed penis penis_through_clothing power_bottom red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings sitting skeleton smaller_penetrated spoopy-gaster straddling submissive_top sweat third-party_source tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games visible_breath white_background yaoi
1boy 1girl 2d 2d_(artwork) animated_skeleton arms_around_another artist_name artist_watermark belly blush bottom_on_top bouncing_breasts breasts brother/sister brother_and_sister brother_penetrating_sister clothed clothing cowgirl_position cum digital_media_(artwork) dirty_talk drooling duo ech7474 ectobelly ectobody ectobreasts ectopussy ectotongue english_text female_sans fontcest from_behind_position from_front_position genderswap genderswap_(mtf) gloves grabbing grabbing_from_behind hood hooded_jacket incest intraspecies jacket large_filesize making_out male male_penetrating missionary_position moaning monochrome monster multiple_orgasms navel nipples orgasm papyrus papyrus_(undertale) papysans penetration penetration_from_behind penetration_from_front prison_guard_position purple_background pussy rule_63 sans sans_(undertale) service_top sex sex_from_behind sex_from_front sibling_incest siblings simple_background skeleton socks talking talking_to_another talking_to_partner tears text tongue tongue_out trembling trembling_legs undead undertale undertale_(series) video_game_character video_games
1boy 1girl 2d 2d_(artwork) animated_skeleton arms_around_another artist_name artist_watermark belly blush bottom_on_top bouncing_breasts breasts brother/sister brother_and_sister brother_penetrating_sister clothed clothing cowgirl_position cum digital_media_(artwork) dirty_talk drooling duo ech7474 ectobelly ectobody ectobreasts ectopussy ectotongue english_text female_sans fontcest from_behind_position from_front_position genderswap genderswap_(mtf) gloves grabbing grabbing_from_behind hood hooded_jacket incest intraspecies jacket large_filesize making_out male male_penetrating missionary_position moaning monochrome monster multiple_orgasms navel nipples orgasm papyrus papyrus_(undertale) papysans penetration penetration_from_behind penetration_from_front prison_guard_position purple_background pussy rule_63 sans sans_(undertale) service_top sex sex_from_behind sex_from_front sibling_incest siblings simple_background skeleton socks talking talking_to_another talking_to_partner tears text tongue tongue_out trembling trembling_legs undead undertale undertale_(series) video_game_character video_games
2020s 2022 2boys 2d 2d_(artwork) anal animated_skeleton bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_tongue blush bottom_on_top bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed digital_media_(artwork) duo ectopenis ectotongue fontcest from_front_position goma_dango_555 green_socks incest intraspecies kneeling larger_male larger_penetrating larger_penetrating_smaller making_out male male_only male_penetrating monster monster_boy orange_blush orange_socks orange_tongue papyrus papyrus_(undertale) papysans partially_clothed penetration penetration_from_front penis pixiv_id_49095896 power_bottom saliva saliva_trail sans sans_(undertale) seme_papyrus sex sex_from_front sibling_incest siblings simple_background skeleton smaller_penetrated socks socks_on solid_color_background sweat tongue tongue_out toony top_papyrus topwear uke_sans undead undertale undertale_(series) video_game_character video_games visible_breath yaoi
2020s 2022 2boys 2d 2d_(artwork) anal animated_skeleton bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_tongue blush bottom_on_top bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed digital_media_(artwork) duo ectopenis ectotongue fontcest from_front_position goma_dango_555 green_socks incest intraspecies kneeling larger_male larger_penetrating larger_penetrating_smaller making_out male male_only male_penetrating monster monster_boy orange_blush orange_socks orange_tongue papyrus papyrus_(undertale) papysans partially_clothed penetration penetration_from_front penis pixiv_id_49095896 power_bottom saliva saliva_trail sans sans_(undertale) seme_papyrus sex sex_from_front sibling_incest siblings simple_background skeleton smaller_penetrated socks socks_on solid_color_background sweat tongue tongue_out toony top_papyrus topwear uke_sans undead undertale undertale_(series) video_game_character video_games visible_breath yaoi
2020s 2021 2boys 2d 2d_(artwork) anal animated_skeleton bigger_penetrating bigger_penetrating_smaller black_background blue_blush blue_tongue blush bottom_on_top bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers censored censored_penis clothed completely_nude crying crying_with_eyes_open duo ectopenis ectoplasm ectotongue fontcest goma_dango_555 incest intraspecies larger_penetrating larger_penetrating_smaller male male_only male_penetrating male_pov monster monster_boy nude orange_blush orange_penis papyrus papyrus_(undertale) papysans partially_clothed penetrating_pov penetration penetrator_pov penis pixiv_id_49095896 pov power_bottom pussy riding riding_penis sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background skeleton smaller_penetrated socks socks_on solo_focus tears tongue tongue_out toony top_papyrus trembling uke_sans undead undertale undertale_(series) unseen_male_face video_games visible_breath white_censor_bar yaoi
2020s 2021 2boys 2d 2d_(artwork) anal animated_skeleton bigger_penetrating bigger_penetrating_smaller black_background blue_blush blue_tongue blush bottom_on_top bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers censored censored_penis clothed completely_nude crying crying_with_eyes_open duo ectopenis ectoplasm ectotongue fontcest goma_dango_555 incest intraspecies larger_penetrating larger_penetrating_smaller male male_only male_penetrating male_pov monster monster_boy nude orange_blush orange_penis papyrus papyrus_(undertale) papysans partially_clothed penetrating_pov penetration penetrator_pov penis pixiv_id_49095896 pov power_bottom pussy riding riding_penis sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background skeleton smaller_penetrated socks socks_on solo_focus tears tongue tongue_out toony top_papyrus trembling uke_sans undead undertale undertale_(series) unseen_male_face video_games visible_breath white_censor_bar yaoi
1:1 1:1_aspect_ratio 2020s 2023 2boys 2d 2d_(artwork) anal animated_skeleton artist_name balls blush blush_lines bodily_fluids bottom_on_top bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers closed_eyes clothed clothing completely_nude completely_nude_male couch couch_sex dominant dominant_male duo ectopenis empath__life fluids fontcest from_behind_position genitals incest leg_grab legs_apart making_out male male/male male_only maledom malesub monster monster_boy nude nude_male papyrus papyrus_(undertale) papysans penetration penis precum sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background sitting sitting_on_couch sitting_on_sofa sitting_position skeleton sofa submissive submissive_male tel_a_friend testicle top_papyrus traditional_art traditional_media_(artwork) twitter uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
1:1 1:1_aspect_ratio 2020s 2023 2boys 2d 2d_(artwork) anal animated_skeleton artist_name balls blush blush_lines bodily_fluids bottom_on_top bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers closed_eyes clothed clothing completely_nude completely_nude_male couch couch_sex dominant dominant_male duo ectopenis empath__life fluids fontcest from_behind_position genitals incest leg_grab legs_apart making_out male male/male male_only maledom malesub monster monster_boy nude nude_male papyrus papyrus_(undertale) papysans penetration penis precum sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background sitting sitting_on_couch sitting_on_sofa sitting_position skeleton sofa submissive submissive_male tel_a_friend testicle top_papyrus traditional_art traditional_media_(artwork) twitter uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2017 2d 2d_(artwork) animated_skeleton artist_name blue_blush blue_tongue blush bottom_on_top bottom_sans completely_nude completely_nude_male cowgirl_position crypticcrows digital_media_(artwork) duo ectotongue elemental_creature elemental_humanoid fire_elemental glasses glasses_only gradient_background grillby grillsans humanoid male male/male male_only mari_keiyou_(artist) mk-doodles monster monster_boy nude nude_male orange_body penetration rectangular_eyewear rectangular_glasses sans sans_(undertale) seme_grillby sex skeleton top_grillby uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2017 2d 2d_(artwork) animated_skeleton artist_name blue_blush blue_tongue blush bottom_on_top bottom_sans completely_nude completely_nude_male cowgirl_position crypticcrows digital_media_(artwork) duo ectotongue elemental_creature elemental_humanoid fire_elemental glasses glasses_only gradient_background grillby grillsans humanoid male male/male male_only mari_keiyou_(artist) mk-doodles monster monster_boy nude nude_male orange_body penetration rectangular_eyewear rectangular_glasses sans sans_(undertale) seme_grillby sex skeleton top_grillby uke_sans undead undertale undertale_(series) video_game_character 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 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
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
1boy 1girl 1girl1boy 2d 2d_(artwork) accurate_art_style alternate_hair_length alternate_hairstyle anthro bed blue_body bottom_on_top bovid caprine character_name cowgirl_position deltarune digital_media_(artwork) duo english_text female/male female_human female_kris_(deltarune) female_on_top from_front_position furniture gameplay_mechanics gif goat hair health_bar human interspecies kris_(dark_world_form) kris_(deltarune) long_hair male male/female male_on_bottom mammal mildred_(artist) on_bottom on_top pixel_(artwork) pixel_animation pixel_art power_bottom ralsei sex straddling straight text third-party_source undertale_(series) video_game_character video_games
1boy 1girl 1girl1boy 2d 2d_(artwork) accurate_art_style alternate_hair_length alternate_hairstyle anthro bed blue_body bottom_on_top bovid caprine character_name cowgirl_position deltarune digital_media_(artwork) duo english_text female/male female_human female_kris_(deltarune) female_on_top from_front_position furniture gameplay_mechanics gif goat hair health_bar human interspecies kris_(dark_world_form) kris_(deltarune) long_hair male male/female male_on_bottom mammal mildred_(artist) on_bottom on_top pixel_(artwork) pixel_animation pixel_art power_bottom ralsei sex straddling straight text third-party_source undertale_(series) video_game_character video_games
2020s 2023 2d 2d_(artwork) absurd_res absurdres animated_skeleton anon anonymous anonymous_male bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie bottom_on_top bottom_sans bottomless cum cum_inside digital_media_(artwork) ectoplasm faceless_male hooded_jacket hoodie jacket konoha6_(pixiv_id_1724049) large_filesize larger_male larger_penetrating larger_penetrating_smaller male male_penetrating male_pov monster monster_boy off_shoulder partial_male penetrating_pov penetrator_pov pov sans sans_(undertale) skeleton smaller_penetrated socks_on solo_focus submissive sweat uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_game_character video_games yaoi
2020s 2023 2d 2d_(artwork) absurd_res absurdres animated_skeleton anon anonymous anonymous_male bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie bottom_on_top bottom_sans bottomless cum cum_inside digital_media_(artwork) ectoplasm faceless_male hooded_jacket hoodie jacket konoha6_(pixiv_id_1724049) large_filesize larger_male larger_penetrating larger_penetrating_smaller male male_penetrating male_pov monster monster_boy off_shoulder partial_male penetrating_pov penetrator_pov pov sans sans_(undertale) skeleton smaller_penetrated socks_on solo_focus submissive sweat uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_game_character video_games yaoi
2020s 2021 2boys 2d 2d_(artwork) 2males abosinsin anal animated_skeleton bad_id bad_twitter_id big_penis bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_penis blue_tongue blush boots bottom_on_top bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers closed_eyes clothed clothed_sex digital_media_(artwork) duo ectopenis ectotongue edit edited erect_while_penetrated erection fontcest gay genitals hand_on_another's_shoulder hooded_jacket hoodie inactive_account incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller line_art lineart looking_pleasured lying_down male male/male male_only male_penetrated male_penetrating male_penetrating_male moaning monster monster_boy open_mouth orange_blush orange_penis overstimulation papyrus papyrus_(font) papyrus_(undertale) papysans partially_colored penetration penis penis_size_difference pleasure_face sans sans_(undertale) seme_papyrus service_top sex sex_through_clothes sex_through_clothing sibling_incest siblings size_difference skeleton small_penis smaller_male smaller_penetrated smooth_penis sweat tears tears_of_pleasure text third-party_edit tongue tongue_grab tongue_out top_papyrus twitter_username uke_sans undead undertale undertale_(series) veiny_penis video_game_character video_games x-ray yaoi
2020s 2021 2boys 2d 2d_(artwork) 2males abosinsin anal animated_skeleton bad_id bad_twitter_id big_penis bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_penis blue_tongue blush boots bottom_on_top bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers closed_eyes clothed clothed_sex digital_media_(artwork) duo ectopenis ectotongue edit edited erect_while_penetrated erection fontcest gay genitals hand_on_another's_shoulder hooded_jacket hoodie inactive_account incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller line_art lineart looking_pleasured lying_down male male/male male_only male_penetrated male_penetrating male_penetrating_male moaning monster monster_boy open_mouth orange_blush orange_penis overstimulation papyrus papyrus_(font) papyrus_(undertale) papysans partially_colored penetration penis penis_size_difference pleasure_face sans sans_(undertale) seme_papyrus service_top sex sex_through_clothes sex_through_clothing sibling_incest siblings size_difference skeleton small_penis smaller_male smaller_penetrated smooth_penis sweat tears tears_of_pleasure text third-party_edit tongue tongue_grab tongue_out top_papyrus twitter_username uke_sans undead undertale undertale_(series) veiny_penis video_game_character video_games x-ray yaoi
1boy 1boy1girl 1girl 2020s 2021 2d 2d_(artwork) after_sex after_vaginal androgynous anus axeyopissum blue_body blue_screen_of_death blue_skin blush blushing_female blushing_male blushing_profusely bottom_on_top cum cum_drip cum_dripping cum_in_pussy darkner deltarune deltarune_chapter_2 digital_media_(artwork) duo female_human female_kris_(deltarune) human humanoid kris_(dark_world_form) kris_(deltarune) long_nose male male/female male_humanoid nurse_cap nurse_uniform pointy_nose power_bottom seme_spamton short_hair simple_background small_penis spamton_g._spamton straight top_spamton undertale_(series) video_game_character video_games
1boy 1boy1girl 1girl 2020s 2021 2d 2d_(artwork) after_sex after_vaginal androgynous anus axeyopissum blue_body blue_screen_of_death blue_skin blush blushing_female blushing_male blushing_profusely bottom_on_top cum cum_drip cum_dripping cum_in_pussy darkner deltarune deltarune_chapter_2 digital_media_(artwork) duo female_human female_kris_(deltarune) human humanoid kris_(dark_world_form) kris_(deltarune) long_nose male male/female male_humanoid nurse_cap nurse_uniform pointy_nose power_bottom seme_spamton short_hair simple_background small_penis spamton_g._spamton straight top_spamton undertale_(series) video_game_character video_games
1boy 2020s 2021 2d 2d_(artwork) ambiguous_gender androgynous anus axeyopissum blue_body blue_skin blush bottom_on_top darkner deltarune deltarune_chapter_2 digital_media_(artwork) duo human humanoid imminent_penetration imminent_sex kris_(dark_world_form) kris_(deltarune) long_nose male male_humanoid mismatched_footwear penis pointy_nose seme_spamton short_hair spamton_g._spamton top_spamton undertale_(series) video_game_character video_games white_background
1boy 2020s 2021 2d 2d_(artwork) ambiguous_gender androgynous anus axeyopissum blue_body blue_skin blush bottom_on_top darkner deltarune deltarune_chapter_2 digital_media_(artwork) duo human humanoid imminent_penetration imminent_sex kris_(dark_world_form) kris_(deltarune) long_nose male male_humanoid mismatched_footwear penis pointy_nose seme_spamton short_hair spamton_g._spamton top_spamton undertale_(series) video_game_character video_games white_background
1boy 1boy1girl 1girl 2020s 2021 2d 2d_(artwork) bigger_female blue_body blue_skin bottom_on_top breasts darkner deltarune deltarune_chapter_2 digital_media_(artwork) duo female_human female_kris_(deltarune) female_on_top hetero human human_penetrated humanoid humanoid_penetrating humanoid_penetrating_human impregnation kris_(dark_world_form) kris_(deltarune) larger_female larger_penetrated long_nose male male/female male_humanoid naked nipples nude nude_female pointy_nose seme_spamton short_hair sillystringsman simple_background smaller_male smaller_penetrating spamton_g._spamton straight third-party_source top_spamton twitter undertale_(series) video_game_character video_games
1boy 1boy1girl 1girl 2020s 2021 2d 2d_(artwork) bigger_female blue_body blue_skin bottom_on_top breasts darkner deltarune deltarune_chapter_2 digital_media_(artwork) duo female_human female_kris_(deltarune) female_on_top hetero human human_penetrated humanoid humanoid_penetrating humanoid_penetrating_human impregnation kris_(dark_world_form) kris_(deltarune) larger_female larger_penetrated long_nose male male/female male_humanoid naked nipples nude nude_female pointy_nose seme_spamton short_hair sillystringsman simple_background smaller_male smaller_penetrating spamton_g._spamton straight third-party_source top_spamton twitter undertale_(series) video_game_character video_games
2023 2boys 2d 2d_(artwork) animated_skeleton bad_id bad_twitter_id bedroom blue_blush blue_hoodie blue_jacket blue_penis blush boots bottom_on_top bottom_sans brothers clothed dark dark_room digital_media_(artwork) duo erection erection_under_clothes fontcest fudanshipochoc gay glowing heart heart_eyes hooded_jacket hoodie imminent_sex incest indoors jacket male male/male male_only male_pov monster off_shoulder one_eye_closed orange_penis papyrus papyrus_(undertale) papysans partial_male penis_bulge pov power_bottom red_boots sans sans_(undertale) seductive seme_papyrus skeleton solo_focus top_papyrus touching_crotch twitter uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2023 2boys 2d 2d_(artwork) animated_skeleton bad_id bad_twitter_id bedroom blue_blush blue_hoodie blue_jacket blue_penis blush boots bottom_on_top bottom_sans brothers clothed dark dark_room digital_media_(artwork) duo erection erection_under_clothes fontcest fudanshipochoc gay glowing heart heart_eyes hooded_jacket hoodie imminent_sex incest indoors jacket male male/male male_only male_pov monster off_shoulder one_eye_closed orange_penis papyrus papyrus_(undertale) papysans partial_male penis_bulge pov power_bottom red_boots sans sans_(undertale) seductive seme_papyrus skeleton solo_focus top_papyrus touching_crotch twitter uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2020s 2021 2boys 2d 2d_(artwork) anal animated_skeleton big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller black_censor_bar blue_background blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_on_top bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers censor_bar censored_penis clothed clothed_male clothing crying digital_media_(artwork) drooling duo ectopenis ectoplasm english_text fontcest genitals gloves hooded_jacket hoodie incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller male male_focus male_only male_penetrating mastery_position monster monster_boy motion_lines orange_penis papyrus papyrus_(undertale) papysans penetration penis red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings sitting_on_lap sitting_position skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks solo_focus sweat tears text thrusting tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games white_border xxoxxkm_(pixiv_id_3871107) yaoi
2020s 2021 2boys 2d 2d_(artwork) anal animated_skeleton big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller black_censor_bar blue_background blue_blush blue_hoodie blue_jacket blue_tongue blush bottom_on_top bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers censor_bar censored_penis clothed clothed_male clothing crying digital_media_(artwork) drooling duo ectopenis ectoplasm english_text fontcest genitals gloves hooded_jacket hoodie incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller male male_focus male_only male_penetrating mastery_position monster monster_boy motion_lines orange_penis papyrus papyrus_(undertale) papysans penetration penis red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings sitting_on_lap sitting_position skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks solo_focus sweat tears text thrusting tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games white_border xxoxxkm_(pixiv_id_3871107) yaoi
2020s 2021 2boys 2d 2d_(artwork) anal animated_skeleton big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_background blue_blush blue_hoodie blue_jacket blue_penis blush bottom_on_top bottom_sans bottomless bottomless_male brothers crying cussing digital_media_(artwork) drooling duo ectopenis ectoplasm english_text erect_while_penetrated erection erection_under_clothes fontcest genitals gloves grabbing_arms hooded_jacket hoodie incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_out_of_frame male_penetrated male_penetrating male_penetrating_male male_pov monster monster_boy orange_penis papyrus papyrus_(undertale) papysans partial_male penetrating_pov penetration penetrator_pov penis penis_size_difference pov profanity red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton small_penis small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus swearing sweat tears text top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games white_border xxoxxkm_(pixiv_id_3871107) yaoi
2020s 2021 2boys 2d 2d_(artwork) anal animated_skeleton big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_background blue_blush blue_hoodie blue_jacket blue_penis blush bottom_on_top bottom_sans bottomless bottomless_male brothers crying cussing digital_media_(artwork) drooling duo ectopenis ectoplasm english_text erect_while_penetrated erection erection_under_clothes fontcest genitals gloves grabbing_arms hooded_jacket hoodie incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_out_of_frame male_penetrated male_penetrating male_penetrating_male male_pov monster monster_boy orange_penis papyrus papyrus_(undertale) papysans partial_male penetrating_pov penetration penetrator_pov penis penis_size_difference pov profanity red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton small_penis small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus swearing sweat tears text top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games white_border xxoxxkm_(pixiv_id_3871107) yaoi
1:1 1:1_aspect_ratio 2010s 2016 2boys 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male black_background black_hair blue_hoodie blue_jacket blue_tongue bottom_on_top bottom_sans clothed dark_background digital_media_(artwork) fel-fisk glowing hair hooded_jacket hoodie humanoid humanoid_robot jacket larger_male licking male male/male male_only mettasans mettaton mettaton_ex monster monster_boy one_eye_closed partially_clothed partially_nude pink_eyes pink_slippers pink_tongue robot robot_boy robot_humanoid sans sans_(undertale) seme_mettaton sinisk skeleton slippers small_sub small_sub_big_dom smaller_male smaller_sub smaller_sub_bigger_dom soul soul_sex sweat tongue tongue_out top_mettaton uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
1:1 1:1_aspect_ratio 2010s 2016 2boys 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male black_background black_hair blue_hoodie blue_jacket blue_tongue bottom_on_top bottom_sans clothed dark_background digital_media_(artwork) fel-fisk glowing hair hooded_jacket hoodie humanoid humanoid_robot jacket larger_male licking male male/male male_only mettasans mettaton mettaton_ex monster monster_boy one_eye_closed partially_clothed partially_nude pink_eyes pink_slippers pink_tongue robot robot_boy robot_humanoid sans sans_(undertale) seme_mettaton sinisk skeleton slippers small_sub small_sub_big_dom smaller_male smaller_sub smaller_sub_bigger_dom soul soul_sex sweat tongue tongue_out top_mettaton uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blush bottom_on_top bottom_sans clothed crying crying_with_eyes_open drooling faceless_male hoodie japanese_text larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male male_pov monster monster_boy one_eye_closed penetrating_pov penetration penetrator_pov pov sans sans_(undertale) sex simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tears text uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blush bottom_on_top bottom_sans clothed crying crying_with_eyes_open drooling faceless_male hoodie japanese_text larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male male_pov monster monster_boy one_eye_closed penetrating_pov penetration penetrator_pov pov sans sans_(undertale) sex simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive sweat tears text uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blush bottom_on_top bottom_sans clothed drooling faceless_male hoodie japanese_text larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male male_pov male_pubic_hair monster monster_boy penetrating_pov penetration penetrator_pov pov pubic_hair sans sans_(undertale) sex simple_background size_difference skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus speech_bubble submissive sweat text uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
2d animated_skeleton anon anonymous_male bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blush bottom_on_top bottom_sans clothed drooling faceless_male hoodie japanese_text larger_male larger_penetrating larger_penetrating_smaller logo_(pixiv_id_30462562) male male_pov male_pubic_hair monster monster_boy penetrating_pov penetration penetrator_pov pov pubic_hair sans sans_(undertale) sex simple_background size_difference skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus speech_bubble submissive sweat text uke_sans undead undertale undertale_(series) unseen_male_face white_background yaoi
1boy 1boy1girl 1girl 2d 2d_(artwork) alternate_breast_size alternate_hairstyle animated_skeleton anthro anthro_penetrated big_breasts blue_body blue_skin blush bottom_on_top breasts cowgirl_position digital_media_(artwork) duo ear_fins ectopenis female female_anthro female_penetrated fins fish fish_girl genitals girl_on_top hair hair_down head_fins hetero humanoid humanoid_penetrating humanoid_penetrating_anthro interspecies long_hair male/female male_penetrating male_penetrating_female monster monster_boy monster_girl navel nipples non-mammal_breasts non-mammal_navel non-mammal_nipples nude nude_anthro nude_female nude_male orange_penis papydyne papyrus papyrus_(undertale) penetration penis penis_in_pussy power_bottom pussy red_hair riding_penis sex skeleton straight straight_sex submissive_top talking_leech undead undertale undertale_(series) undyne unseen_male_face vaginal vaginal_penetration vaginal_sex video_game_character video_games yellow_sclera
1boy 1boy1girl 1girl 2d 2d_(artwork) alternate_breast_size alternate_hairstyle animated_skeleton anthro anthro_penetrated big_breasts blue_body blue_skin blush bottom_on_top breasts cowgirl_position digital_media_(artwork) duo ear_fins ectopenis female female_anthro female_penetrated fins fish fish_girl genitals girl_on_top hair hair_down head_fins hetero humanoid humanoid_penetrating humanoid_penetrating_anthro interspecies long_hair male/female male_penetrating male_penetrating_female monster monster_boy monster_girl navel nipples non-mammal_breasts non-mammal_navel non-mammal_nipples nude nude_anthro nude_female nude_male orange_penis papydyne papyrus papyrus_(undertale) penetration penis penis_in_pussy power_bottom pussy red_hair riding_penis sex skeleton straight straight_sex submissive_top talking_leech undead undertale undertale_(series) undyne unseen_male_face vaginal vaginal_penetration vaginal_sex video_game_character video_games yellow_sclera
1boy 1boy1girl 1girl 2d 2d_(artwork) animated_skeleton anthro anthro_focus anthro_penetrated blue_body blue_breasts blue_eyes blue_pussy blue_skin blue_tongue blush bottom_on_top breast_grab breasts clothed/nude clothed_male clothed_male_nude_female completely_nude_female cowgirl_position digital_media_(artwork) dominant_anthro dominant_female duo ear_fins echoheartx ectopenis elegantfolly female female_anthro female_focus female_on_top female_penetrated femdom fins fish fish_girl genitals girl_on_top gloves grabbing_breast grabbing_leg hair head_fins hetero humanoid humanoid_penetrating humanoid_penetrating_anthro indoors interspecies leg_grab male male/female male_penetrating male_penetrating_female monster monster_boy monster_girl navel nipples non-mammal_breasts non-mammal_navel non-mammal_nipples nude nude_anthro nude_female nude_female_clothed_male orange_penis papydyne papyrus papyrus_(undertale) penetration penis penis_in_pussy power_bottom pussy red_areola red_gloves red_hair red_nipples riding_penis scar scar_across_eye seme_papyrus sex sharp_teeth skeleton solo_focus straight straight_sex submissive_humanoid submissive_male submissive_top third-party_source top_papyrus undead undertale undertale_(series) undyne unseen_male_face vaginal vaginal_penetration video_game_character video_games yellow_sclera yellow_teeth
1boy 1boy1girl 1girl 2d 2d_(artwork) animated_skeleton anthro anthro_focus anthro_penetrated blue_body blue_breasts blue_eyes blue_pussy blue_skin blue_tongue blush bottom_on_top breast_grab breasts clothed/nude clothed_male clothed_male_nude_female completely_nude_female cowgirl_position digital_media_(artwork) dominant_anthro dominant_female duo ear_fins echoheartx ectopenis elegantfolly female female_anthro female_focus female_on_top female_penetrated femdom fins fish fish_girl genitals girl_on_top gloves grabbing_breast grabbing_leg hair head_fins hetero humanoid humanoid_penetrating humanoid_penetrating_anthro indoors interspecies leg_grab male male/female male_penetrating male_penetrating_female monster monster_boy monster_girl navel nipples non-mammal_breasts non-mammal_navel non-mammal_nipples nude nude_anthro nude_female nude_female_clothed_male orange_penis papydyne papyrus papyrus_(undertale) penetration penis penis_in_pussy power_bottom pussy red_areola red_gloves red_hair red_nipples riding_penis scar scar_across_eye seme_papyrus sex sharp_teeth skeleton solo_focus straight straight_sex submissive_humanoid submissive_male submissive_top third-party_source top_papyrus undead undertale undertale_(series) undyne unseen_male_face vaginal vaginal_penetration video_game_character video_games yellow_sclera yellow_teeth
2010s 2018 3koma animated_skeleton bigger_penetrating bigger_penetrating_smaller blue_blush blue_penis blush bottom_on_top bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers comic comic_panel comic_sans couch drooling duo ectopenis elbow_gloves english_text fallen9choirs fontcest furniture gay gloves incest larger_penetrating larger_penetrating_smaller long_gloves male male/male male_only male_penetrating male_penetrating_male monster monster_boy on_back orange_blush orange_penis papyrus papyrus_(font) papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration power_bottom red_gloves red_scarf sans sans_(undertale) scarf seme_papyrus sex sibling_incest siblings skeleton smaller_penetrated speech_bubble sweat text text_bubble thought_bubble top_papyrus topwear uke_sans undead undertale undertale_(series) yaoi
2010s 2018 3koma animated_skeleton bigger_penetrating bigger_penetrating_smaller blue_blush blue_penis blush bottom_on_top bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers comic comic_panel comic_sans couch drooling duo ectopenis elbow_gloves english_text fallen9choirs fontcest furniture gay gloves incest larger_penetrating larger_penetrating_smaller long_gloves male male/male male_only male_penetrating male_penetrating_male monster monster_boy on_back orange_blush orange_penis papyrus papyrus_(font) papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration power_bottom red_gloves red_scarf sans sans_(undertale) scarf seme_papyrus sex sibling_incest siblings skeleton smaller_penetrated speech_bubble sweat text text_bubble thought_bubble top_papyrus topwear uke_sans undead undertale undertale_(series) yaoi
2010s 2017 2d 2d_(artwork) animated_skeleton blue_blush blush bottom_on_top bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers comic_sans digital_media_(artwork) duo ectopenis english_text fontcest gloves gradient_background holding_hands hoodie incest interlocked_fingers intertwined_fingers looking_at_viewer male male_focus male_only male_penetrating male_pov mmmemmo monster monster_boy onomatopoeia orange_penis papyrus papyrus_(undertale) papysans partial_male penetrating_pov penetration penetrator_pov penis pov power_bottom red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton solo_focus text top_papyrus tumblr uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_game_character video_games yaoi yellow_background
2010s 2017 2d 2d_(artwork) animated_skeleton blue_blush blush bottom_on_top bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers comic_sans digital_media_(artwork) duo ectopenis english_text fontcest gloves gradient_background holding_hands hoodie incest interlocked_fingers intertwined_fingers looking_at_viewer male male_focus male_only male_penetrating male_pov mmmemmo monster monster_boy onomatopoeia orange_penis papyrus papyrus_(undertale) papysans partial_male penetrating_pov penetration penetrator_pov penis pov power_bottom red_gloves sans sans_(undertale) seme_papyrus sex sibling_incest siblings skeleton solo_focus text top_papyrus tumblr uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_game_character video_games yaoi yellow_background
1boy 2010s 2018 2d 2d_(artwork) animated_skeleton artist_name bottom_on_top bottom_sans digital_media_(artwork) grinding heki_(miss60250) looking_down male male_focus male_only monster monster_boy power_bottom precum sans sans_(undertale) skeleton smile third-party_source uke_sans undead undertale undertale_(series) video_games white_background yaoi
1boy 2010s 2018 2d 2d_(artwork) animated_skeleton artist_name bottom_on_top bottom_sans digital_media_(artwork) grinding heki_(miss60250) looking_down male male_focus male_only monster monster_boy power_bottom precum sans sans_(undertale) skeleton smile third-party_source uke_sans undead undertale undertale_(series) video_games white_background yaoi
2020s 2023 2boys 2d 2d_(artwork) after_penetration after_sex animated_skeleton artist_name bigger_penetrating blue_blush blush bottom_on_top bottom_sans brother brother/brother brother_and_brother brothers completely_nude completely_nude_male cum cum_leaking cum_trail digital_media_(artwork) duo ectopenis facing_another fontcest incest intraspecies kneeling larger_penetrating larger_penetrating_smaller looking_at_another looking_at_partner male male_only male_penetrating monochrome monster monster_boy nude nude_male orange_blush orange_penis papyrus papyrus_(undertale) papysans penis power_bottom sans sans_(undertale) seme_papyrus sibling_incest siblings sitting skeleton smaller_penetrated spoken_heart submissive_top testicles text themimii1 top_papyrus twitter_username uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2020s 2023 2boys 2d 2d_(artwork) after_penetration after_sex animated_skeleton artist_name bigger_penetrating blue_blush blush bottom_on_top bottom_sans brother brother/brother brother_and_brother brothers completely_nude completely_nude_male cum cum_leaking cum_trail digital_media_(artwork) duo ectopenis facing_another fontcest incest intraspecies kneeling larger_penetrating larger_penetrating_smaller looking_at_another looking_at_partner male male_only male_penetrating monochrome monster monster_boy nude nude_male orange_blush orange_penis papyrus papyrus_(undertale) papysans penis power_bottom sans sans_(undertale) seme_papyrus sibling_incest siblings sitting skeleton smaller_penetrated spoken_heart submissive_top testicles text themimii1 top_papyrus twitter_username uke_sans undead undertale undertale_(series) video_game_character video_games yaoi