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1boy 1cuntboy 2010s 2016 2d 2d_(artwork) animated_skeleton bottom_sans brother/brother brother_penetrating_brother brothers comic comic_page cum cum_in_pussy cuntboy cuntboy_penetrated cuntboysub digital_media_(artwork) dominant_male duo ectopenis ectopussy eli-sin-g english_text fontcest genitals incest kolesjoie male male/cuntboy male_penetrating male_penetrating_cuntboy maledom monster papyrus papyrus_(font) papyrus_(undertale) papysans penetration penis pussy sans sans_(undertale) seme_papyrus sequence sequential sex skeleton submissive_cuntboy text top_papyrus uke_sans undead undertale undertale_(series) vaginal veiny_penis video_game_character video_games yaoi
1boy 1cuntboy 2010s 2016 2d 2d_(artwork) animated_skeleton bottom_sans brother/brother brother_penetrating_brother brothers comic comic_page cum cum_in_pussy cuntboy cuntboy_penetrated cuntboysub digital_media_(artwork) dominant_male duo ectopenis ectopussy eli-sin-g english_text fontcest genitals incest kolesjoie male male/cuntboy male_penetrating male_penetrating_cuntboy maledom monster papyrus papyrus_(font) papyrus_(undertale) papysans penetration penis pussy sans sans_(undertale) seme_papyrus sequence sequential sex skeleton submissive_cuntboy text top_papyrus uke_sans undead undertale undertale_(series) vaginal veiny_penis video_game_character video_games yaoi
2020s 2022 2boys 2d 2d_(artwork) anal animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_tongue bodily_fluids boner_blossom bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers crying crying_with_eyes_open digital_media_(artwork) drooling duo ectopenis ectoplasm english_text fluids fontcest gay heart-shaped_pupils heart_eyes humanoid incest intraspecies larger_male larger_penetrating male male/male male_only male_penetrated male_penetrating male_penetrating_male missionary_position monster monster_boy non-con non-consensual noncon nonconsensual nude nude_male orange_penis papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penis rape safeword sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom speech_bubble sweat tears text text_bubble thrusting tongue top_papyrus twitter twitter_username uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2020s 2022 2boys 2d 2d_(artwork) anal animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_tongue bodily_fluids boner_blossom bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers crying crying_with_eyes_open digital_media_(artwork) drooling duo ectopenis ectoplasm english_text fluids fontcest gay heart-shaped_pupils heart_eyes humanoid incest intraspecies larger_male larger_penetrating male male/male male_only male_penetrated male_penetrating male_penetrating_male missionary_position monster monster_boy non-con non-consensual noncon nonconsensual nude nude_male orange_penis papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penis rape safeword sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom speech_bubble sweat tears text text_bubble thrusting tongue top_papyrus twitter twitter_username uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2020 2020s 2boys 2d anal animated_skeleton big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller black_border blue_blush blush boner_blossom bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers carrying carrying_partner chair clothed comic_sans commission covering_another's_mouth covering_mouth digital_media drooling duo ectoplasm english_text fontcest gay humanoid incest intraspecies larger_male larger_penetrating male male/male male_penetrating moaning monster monster_boy orange_blush outdoor_sex outdoors pants pants_around_one_leg papyrus papyrus_(font) papyrus_(undertale) papysans penetration public_sex reverse_suspended_congress sans sans_(undertale) seme_papyrus sex sibling_incest siblings sitting sitting_on_chair skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom speech_bubble sweat text text_bubble top_papyrus twitter_username uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2020 2020s 2boys 2d anal animated_skeleton big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller black_border blue_blush blush boner_blossom bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers carrying carrying_partner chair clothed comic_sans commission covering_another's_mouth covering_mouth digital_media drooling duo ectoplasm english_text fontcest gay humanoid incest intraspecies larger_male larger_penetrating male male/male male_penetrating moaning monster monster_boy orange_blush outdoor_sex outdoors pants pants_around_one_leg papyrus papyrus_(font) papyrus_(undertale) papysans penetration public_sex reverse_suspended_congress sans sans_(undertale) seme_papyrus sex sibling_incest siblings sitting sitting_on_chair skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom speech_bubble sweat text text_bubble top_papyrus twitter_username uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2020s 2022 2boys anal animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller bleeding blood blue_blush blush boner_blossom bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers clothed crying crying_with_eyes_open defloration deflowering drooling duo ectopenis ectoplasm english_text fontcest gay grabbing_arms grey_background humanoid incest intraspecies larger_male larger_penetrating male male/male male_penetrating monochrome monster monster_boy non-con non-consensual noncon nonconsensual nude onomatopoeia orange_blush papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male partially_colored penetration penis rape sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background sitting skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom speech_bubble sweat tears text text_bubble top_papyrus twitter twitter_username uke_sans undead undertale undertale_(series) yaoi
2020s 2022 2boys anal animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller bleeding blood blue_blush blush boner_blossom bottom_sans bottomless bottomless_male brother/brother brother_penetrating_brother brothers clothed crying crying_with_eyes_open defloration deflowering drooling duo ectopenis ectoplasm english_text fontcest gay grabbing_arms grey_background humanoid incest intraspecies larger_male larger_penetrating male male/male male_penetrating monochrome monster monster_boy non-con non-consensual noncon nonconsensual nude onomatopoeia orange_blush papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male partially_colored penetration penis rape sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background sitting skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom speech_bubble sweat tears text text_bubble top_papyrus twitter twitter_username uke_sans undead undertale undertale_(series) yaoi
2021 2boys 2d animated_skeleton big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller bottom_sans brother/brother brother_penetrating_brother brothers cussing duo ectopenis english_text fontcest gay grabbing_head head_grab heart-shaped_pupils heart_eyes humanoid incest intraspecies irrumatio larger_male larger_penetrating male male/male male_penetrating monochrome monster monster_boy multiple_views papyrus papyrus_(undertale) papysans penetration penis profanity pushing_head_towards_fellatio sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background skeleton sketch sleeping small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom swearing text tired_but_horny_(artist) top_papyrus twitter uke_sans undead undertale undertale_(series) video_game_character video_games white_background yaoi zzz
2021 2boys 2d animated_skeleton big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller bottom_sans brother/brother brother_penetrating_brother brothers cussing duo ectopenis english_text fontcest gay grabbing_head head_grab heart-shaped_pupils heart_eyes humanoid incest intraspecies irrumatio larger_male larger_penetrating male male/male male_penetrating monochrome monster monster_boy multiple_views papyrus papyrus_(undertale) papysans penetration penis profanity pushing_head_towards_fellatio sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background skeleton sketch sleeping small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom swearing text tired_but_horny_(artist) top_papyrus twitter uke_sans undead undertale undertale_(series) video_game_character video_games white_background yaoi zzz
2010s 2017 2boys 2d 2d_(artwork) animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male blue_blush blush bondage bottom_sans brother brothers clothed digital_media_(artwork) duo eggford erection erection_under_clothes fontcest genital_fluids incest kneel kneeling looking_at_another looking_back looking_back_at_another male male/male male_only monster orange_background papyrus papyrus_(undertale) papysans partial_male penis precum precum_through_clothing sans sans_(undertale) seme_papyrus simple_background skeleton small_sub small_sub_big_dom smaller_sub smaller_sub_bigger_dom solo_focus tied_up top_papyrus tumblr uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2010s 2017 2boys 2d 2d_(artwork) animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male blue_blush blush bondage bottom_sans brother brothers clothed digital_media_(artwork) duo eggford erection erection_under_clothes fontcest genital_fluids incest kneel kneeling looking_at_another looking_back looking_back_at_another male male/male male_only monster orange_background papyrus papyrus_(undertale) papysans partial_male penis precum precum_through_clothing sans sans_(undertale) seme_papyrus simple_background skeleton small_sub small_sub_big_dom smaller_sub smaller_sub_bigger_dom solo_focus tied_up top_papyrus tumblr uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2010s 2015 2boys 2d 2d_(artwork) animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_background blue_penis bottom_sans brother_penetrating_brother brothers clothed clothed/nude digital_media_(artwork) duo duplicate ectopenis fontcest gay grabbing_from_behind grabbing_mouth incest larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy noxiousaberration nude open_mouth orange_penis papyrus papyrus_(undertale) papysans penis sans sans_(undertale) seme_papyrus sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus tongue tongue_grab tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2010s 2015 2boys 2d 2d_(artwork) animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_background blue_penis bottom_sans brother_penetrating_brother brothers clothed clothed/nude digital_media_(artwork) duo duplicate ectopenis fontcest gay grabbing_from_behind grabbing_mouth incest larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy noxiousaberration nude open_mouth orange_penis papyrus papyrus_(undertale) papysans penis sans sans_(undertale) seme_papyrus sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus tongue tongue_grab tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
2010s 2018 2boys animated_skeleton blue_tongue bottom_sans brother brother/brother brother_and_brother brothers clothed duo fontcest fontgalore grabbing_face grey_background hand incest male male_only monster one_eye_closed out_of_frame pancakepants papyrus papyrus_(undertale) papysans saliva saliva_on_finger saliva_on_tongue saliva_trail sans sans_(undertale) seme_papyrus skeleton solid_color_background solo_focus submissive tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_character unseen_male unseen_male_face upper_body yaoi
2010s 2018 2boys animated_skeleton blue_tongue bottom_sans brother brother/brother brother_and_brother brothers clothed duo fontcest fontgalore grabbing_face grey_background hand incest male male_only monster one_eye_closed out_of_frame pancakepants papyrus papyrus_(undertale) papysans saliva saliva_on_finger saliva_on_tongue saliva_trail sans sans_(undertale) seme_papyrus skeleton solid_color_background solo_focus submissive tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_character unseen_male unseen_male_face upper_body yaoi
2010s 2015 2boys animated_skeleton blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers dakuyakko disembodied_penis duo fontcest heart heart-shaped_pupils incest male male_only monster orange_penis papyrus papyrus_(undertale) papysans penis penis_on_cheek penis_on_face sans sans_(undertale) seme_papyrus skeleton solo_focus top_papyrus tumblr_username uke_sans undead undertale undertale_(series) unseen_male unseen_male_face upper_body veiny_penis white_background yaoi
2010s 2015 2boys animated_skeleton blue_blush blush bottom_sans brother brother/brother brother_and_brother brothers dakuyakko disembodied_penis duo fontcest heart heart-shaped_pupils incest male male_only monster orange_penis papyrus papyrus_(undertale) papysans penis penis_on_cheek penis_on_face sans sans_(undertale) seme_papyrus skeleton solo_focus top_papyrus tumblr_username uke_sans undead undertale undertale_(series) unseen_male unseen_male_face upper_body veiny_penis white_background yaoi
2010s 2015 2boys 2d 2d_(artwork) animated_skeleton artist_request blue_blush blue_penis blush bottom_sans brother_penetrating_brother brothers cum_while_penetrated digital_media_(artwork) ectopenis fontcest gay humanoid incest male male/male male_focus male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy nude nude_male orange_penis papyrus papyrus_(undertale) papysans penis sans sans_(undertale) seme_papyrus skeleton sketch solo_focus third-party_source top_papyrus uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_game_character video_games yaoi
2010s 2015 2boys 2d 2d_(artwork) animated_skeleton artist_request blue_blush blue_penis blush bottom_sans brother_penetrating_brother brothers cum_while_penetrated digital_media_(artwork) ectopenis fontcest gay humanoid incest male male/male male_focus male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy nude nude_male orange_penis papyrus papyrus_(undertale) papysans penis sans sans_(undertale) seme_papyrus skeleton sketch solo_focus third-party_source top_papyrus uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_game_character video_games yaoi
2d 2d_(artwork) ahegao animated_skeleton bimbaloon bottom_sans bottomless brother brothers clothed cum cum_on_body cum_on_clothes digital_media_(artwork) disembodied_penis fontcest glowing_cum hi_res hoodie incest littlegreendorito looking_pleasured male male_ahegao male_focus male_only monster orange_penis papyrus papyrus_(undertale) papysans penis pleasure_face riding_penis sans sans_(undertale) seme_papyrus skeleton solo_focus tongue_out top_papyrus tumblr_username twitter uke_sans undead undertale undertale_(series) unseen_character unseen_male unseen_male_face video_game_character video_games yaoi
2d 2d_(artwork) ahegao animated_skeleton bimbaloon bottom_sans bottomless brother brothers clothed cum cum_on_body cum_on_clothes digital_media_(artwork) disembodied_penis fontcest glowing_cum hi_res hoodie incest littlegreendorito looking_pleasured male male_ahegao male_focus male_only monster orange_penis papyrus papyrus_(undertale) papysans penis pleasure_face riding_penis sans sans_(undertale) seme_papyrus skeleton solo_focus tongue_out top_papyrus tumblr_username twitter uke_sans undead undertale undertale_(series) unseen_character unseen_male unseen_male_face video_game_character video_games yaoi
2boys 2d 2d_(artwork) animated_skeleton bimbaloon blue_eyes blue_tongue bottom_sans brother brothers clothed dark_background digital_media_(artwork) duo ectotongue fellatio fellatio_pov fontcest glowing_cum grabbing_penis hi_res incest licking_penis littlegreendorito long_tongue looking_at_viewer male male_focus male_only male_pov monster oral orange_body orange_penis papyrus papyrus_(undertale) papysans partial_male penis pov pov_eye_contact sans sans_(undertale) seme_papyrus skeleton solo_focus third-party_source tongue top_papyrus tumblr_username twitter uke_sans undead undertale undertale_(series) unseen_male_face upper_body video_game_character video_games yaoi
2boys 2d 2d_(artwork) animated_skeleton bimbaloon blue_eyes blue_tongue bottom_sans brother brothers clothed dark_background digital_media_(artwork) duo ectotongue fellatio fellatio_pov fontcest glowing_cum grabbing_penis hi_res incest licking_penis littlegreendorito long_tongue looking_at_viewer male male_focus male_only male_pov monster oral orange_body orange_penis papyrus papyrus_(undertale) papysans partial_male penis pov pov_eye_contact sans sans_(undertale) seme_papyrus skeleton solo_focus third-party_source tongue top_papyrus tumblr_username twitter uke_sans undead undertale undertale_(series) unseen_male_face upper_body video_game_character video_games yaoi
2boys 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket blue_tongue blush bottom_sans brother/brother brother_penetrating_brother brothers clothed digital_media_(artwork) drunk duo ectopenis english_text face_grab fontcest from_behind_position ganzooky gay grabbing_face highres hoodie incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller lying_on_snow lying_on_stomach male male/male male_only male_penetrating monster monster_boy nsfwsinningsans one_eye_closed orange_blush orange_penis outside pants_around_one_leg pants_pulled_down papyrus papyrus_(undertale) papysans penetration penetration_from_behind sans sans_(undertale) seme_papyrus sex sex_from_behind sibling_incest siblings simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom snow sweat text tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games white_background yaoi
2boys 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket blue_tongue blush bottom_sans brother/brother brother_penetrating_brother brothers clothed digital_media_(artwork) drunk duo ectopenis english_text face_grab fontcest from_behind_position ganzooky gay grabbing_face highres hoodie incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller lying_on_snow lying_on_stomach male male/male male_only male_penetrating monster monster_boy nsfwsinningsans one_eye_closed orange_blush orange_penis outside pants_around_one_leg pants_pulled_down papyrus papyrus_(undertale) papysans penetration penetration_from_behind sans sans_(undertale) seme_papyrus sex sex_from_behind sibling_incest siblings simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom snow sweat text tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games white_background yaoi
2010s 2019 2boys 2d 2d_(artwork) animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers digital_media_(artwork) duo ectopenis english_text fontcest from_front_position ganzooky gay holding_object holding_phone hoodie hoodie_only incest intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy nsfwsinningsans orange_blush orange_penis pants_only papyrus papyrus_(undertale) papysans penetration phone phone_call sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom sweat talking_on_phone text thrusting top_papyrus topless topless_male uke_sans undead undertale undertale_(series) undertale_fanfiction video_game_character video_games white_background yaoi
2010s 2019 2boys 2d 2d_(artwork) animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers digital_media_(artwork) duo ectopenis english_text fontcest from_front_position ganzooky gay holding_object holding_phone hoodie hoodie_only incest intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy nsfwsinningsans orange_blush orange_penis pants_only papyrus papyrus_(undertale) papysans penetration phone phone_call sans sans_(undertale) seme_papyrus sex sibling_incest siblings simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom sweat talking_on_phone text thrusting top_papyrus topless topless_male uke_sans undead undertale undertale_(series) undertale_fanfiction video_game_character video_games white_background 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
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 2022 2boys 2d 2d_(artwork) all_fours alternate_costume animated_skeleton antler_headband bell_collar blue_blush blue_body blue_hoodie blue_jacket blush boots bottom_sans boxers_(clothing) brother brother/brother brother_and_brother brothers candle candles christmas christmas_present christmas_sock christmas_tree clothed collar cookie couch digital_media_(artwork) duo ectobody ectopenis ectotongue fellatio floor fontcest furniture gift_box glass gloves green_couch hand_on_another's_head holidays hooded_jacket hoodie incest indoors jacket living_room male male/male male_only merry_christmas monster monster_boy on_floor oral oral_sex orange_blush orange_penis orange_tongue pants_on_floor pants_removed papyrus papyrus_(undertale) papysans penis plate red_boots red_gloves red_hoodie red_jacket red_socks sans sans_(undertale) santa_hat seme_papyrus sex sibling_incest siblings sinncognito sitting sitting_on_floor skeleton socks socks_on sucking_penis top_papyrus uke_sans undead undertale undertale_(series) video_games window yaoi
2020s 2022 2boys 2d 2d_(artwork) all_fours alternate_costume animated_skeleton antler_headband bell_collar blue_blush blue_body blue_hoodie blue_jacket blush boots bottom_sans boxers_(clothing) brother brother/brother brother_and_brother brothers candle candles christmas christmas_present christmas_sock christmas_tree clothed collar cookie couch digital_media_(artwork) duo ectobody ectopenis ectotongue fellatio floor fontcest furniture gift_box glass gloves green_couch hand_on_another's_head holidays hooded_jacket hoodie incest indoors jacket living_room male male/male male_only merry_christmas monster monster_boy on_floor oral oral_sex orange_blush orange_penis orange_tongue pants_on_floor pants_removed papyrus papyrus_(undertale) papysans penis plate red_boots red_gloves red_hoodie red_jacket red_socks sans sans_(undertale) santa_hat seme_papyrus sex sibling_incest siblings sinncognito sitting sitting_on_floor skeleton socks socks_on sucking_penis top_papyrus uke_sans undead undertale undertale_(series) video_games window yaoi
2010s 2018 2d 2d_(artwork) animated_skeleton begging blue_blush blush bottom_sans bottomless brother brothers clothed digital_media_(artwork) duo english_text fontcest imminent_incest imminent_sex incest monster nagisaheichou papyrus papyrus_(undertale) papysans sans sans_(undertale) seme_papyrus skeleton text top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2018 2d 2d_(artwork) animated_skeleton begging blue_blush blush bottom_sans bottomless brother brothers clothed digital_media_(artwork) duo english_text fontcest imminent_incest imminent_sex incest monster nagisaheichou papyrus papyrus_(undertale) papysans sans sans_(undertale) seme_papyrus skeleton text top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
1:1 1:1_aspect_ratio 2010s 2018 2d 2d_(artwork) animated_skeleton blue_blush blue_tongue blush bottom_sans brother brother/brother brothers chin_grab clothed digital_media_(artwork) duo ectotongue english_text face_grab fontcest food grabbing_another's_chin implied_sex incest licking licking_neck licking_popsicle monster monster_boy multiple_views orange_popsicle orange_tongue papyrus papyrus_(undertale) papysans partially_colored popsicle sans sans_(undertale) seme_papyrus skeleton spoken_musical_note suggestive_food sympharin symphysins text tongue tongue_grab tongue_out top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games white_background yaoi
1:1 1:1_aspect_ratio 2010s 2018 2d 2d_(artwork) animated_skeleton blue_blush blue_tongue blush bottom_sans brother brother/brother brothers chin_grab clothed digital_media_(artwork) duo ectotongue english_text face_grab fontcest food grabbing_another's_chin implied_sex incest licking licking_neck licking_popsicle monster monster_boy multiple_views orange_popsicle orange_tongue papyrus papyrus_(undertale) papysans partially_colored popsicle sans sans_(undertale) seme_papyrus skeleton spoken_musical_note suggestive_food sympharin symphysins text tongue tongue_grab tongue_out top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games white_background yaoi
2020 2020s 2boys 2d 2d_(artwork) animated_skeleton blue_eyes blue_tongue bottom_sans brother brother/brother brother_and_brother brothers clothed dark dark_background digital_media_(artwork) fellatio fellatio_pov fontcest genitals glowing glowing_genitalia glowing_penis grabbing_penis incest licking licking_penis male male_only male_pov monster monster_boy oral orange_penis papyrus papyrus_(undertale) papysans penis pov sans sans_(undertale) seme_papyrus sex sinncognito skeleton solo_focus top_papyrus twitter uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_game_character video_games yaoi
2020 2020s 2boys 2d 2d_(artwork) animated_skeleton blue_eyes blue_tongue bottom_sans brother brother/brother brother_and_brother brothers clothed dark dark_background digital_media_(artwork) fellatio fellatio_pov fontcest genitals glowing glowing_genitalia glowing_penis grabbing_penis incest licking licking_penis male male_only male_pov monster monster_boy oral orange_penis papyrus papyrus_(undertale) papysans penis pov sans sans_(undertale) seme_papyrus sex sinncognito skeleton solo_focus top_papyrus twitter uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_game_character video_games yaoi
2boys animated_skeleton artist_name bad_id bad_twitter_id bottom_sans brothers clothed dark duo fellatio fellatio_pov fontcest glowing glowing_penis inactive_account incest looking_at_viewer male male_only male_pov monster monster_boy papyrus papyrus_(undertale) papysans pov sans sans_(undertale) seme_papyrus skeleton solo_focus top_papyrus twitter uke_sans undead undertale undertale_(series) unseen_male unseen_male_face xmatsukisinsx yaoi
2boys animated_skeleton artist_name bad_id bad_twitter_id bottom_sans brothers clothed dark duo fellatio fellatio_pov fontcest glowing glowing_penis inactive_account incest looking_at_viewer male male_only male_pov monster monster_boy papyrus papyrus_(undertale) papysans pov sans sans_(undertale) seme_papyrus skeleton solo_focus top_papyrus twitter uke_sans undead undertale undertale_(series) unseen_male unseen_male_face xmatsukisinsx yaoi
2010s 2boys alternate_version_available animated_skeleton big_penis blue_blush blue_tongue blush bottom_sans brother brother/brother brother_and_brother brothers duo ectopenis eli-sin-g fontcest grabbing_leg incest kolesjoie licking_penis looking_at_viewer male male/male male_only male_pov monster one_eye_closed orange_penis papyrus papyrus_(undertale) papysans penis pov precum sans sans_(undertale) seme_papyrus sepia skeleton solo_focus sweat tongue top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face veiny_penis yaoi
2010s 2boys alternate_version_available animated_skeleton big_penis blue_blush blue_tongue blush bottom_sans brother brother/brother brother_and_brother brothers duo ectopenis eli-sin-g fontcest grabbing_leg incest kolesjoie licking_penis looking_at_viewer male male/male male_only male_pov monster one_eye_closed orange_penis papyrus papyrus_(undertale) papysans penis pov precum sans sans_(undertale) seme_papyrus sepia skeleton solo_focus sweat tongue top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face veiny_penis yaoi
2010s 2boys alternate_version_available animated_skeleton blue_blush blue_tongue blush bottom_sans brother brother/brother brother_and_brother brothers chocolate duo eli-sin-g fontcest food food_play grabbing_leg incest kolesjoie licking_food looking_at_viewer male male/male male_only male_pov monster one_eye_closed papyrus papyrus_(undertale) papysans pov sans sans_(undertale) seme_papyrus sepia skeleton solo_focus tongue top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face yaoi
2010s 2boys alternate_version_available animated_skeleton blue_blush blue_tongue blush bottom_sans brother brother/brother brother_and_brother brothers chocolate duo eli-sin-g fontcest food food_play grabbing_leg incest kolesjoie licking_food looking_at_viewer male male/male male_only male_pov monster one_eye_closed papyrus papyrus_(undertale) papysans pov sans sans_(undertale) seme_papyrus sepia skeleton solo_focus tongue top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face yaoi
2010s 2boys alternate_version_available animated_skeleton bottom_sans brother brother/brother brother_and_brother brothers duo eli-sin-g fontcest grabbing_leg incest kolesjoie looking_at_viewer male male/male male_only male_pov monster one_eye_closed papyrus papyrus_(undertale) papysans pov sans sans_(undertale) seme_papyrus sepia skeleton solo_focus top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face yaoi
2010s 2boys alternate_version_available animated_skeleton bottom_sans brother brother/brother brother_and_brother brothers duo eli-sin-g fontcest grabbing_leg incest kolesjoie looking_at_viewer male male/male male_only male_pov monster one_eye_closed papyrus papyrus_(undertale) papysans pov sans sans_(undertale) seme_papyrus sepia skeleton solo_focus top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face yaoi
2010s 2boys animated_skeleton blue_blush blush bottom_sans brothers clothed crying duo eli-sin-g fontcest gay grabbing_head implied_sex incest kissing kolesjoie male male/male male_only monster one_eye_close orange_blush papyrus papyrus_(undertale) papysans sans sans_(undertale) seme_papyrus skeleton sweater tears top_papyrus trembling uke_sans undead undertale undertale_(series) upper_body yaoi
2010s 2boys animated_skeleton blue_blush blush bottom_sans brothers clothed crying duo eli-sin-g fontcest gay grabbing_head implied_sex incest kissing kolesjoie male male/male male_only monster one_eye_close orange_blush papyrus papyrus_(undertale) papysans sans sans_(undertale) seme_papyrus skeleton sweater tears top_papyrus trembling uke_sans undead undertale undertale_(series) upper_body yaoi
2017 2boys 2d animated_skeleton bottom_sans brother/brother brothers carrying carrying_partner carrying_position crying duo ectotongue fontcest incest interlocked_fingers intertwined_fingers licking licking_face lowest-of-dirt monster orange_tongue papyrus_(undertale) papysans sans_(undertale) seme_papyrus skeleton tongue top_papyrus traditional_media undead undertale undertale_(series) video_game_character video_games yaoi
2017 2boys 2d animated_skeleton bottom_sans brother/brother brothers carrying carrying_partner carrying_position crying duo ectotongue fontcest incest interlocked_fingers intertwined_fingers licking licking_face lowest-of-dirt monster orange_tongue papyrus_(undertale) papysans sans_(undertale) seme_papyrus skeleton tongue top_papyrus traditional_media undead undertale undertale_(series) video_game_character video_games yaoi
2d 2d_(artwork) ahegao animal animated_skeleton annoying_dog_(undertale) beastiality bigger_penetrating bigger_penetrating_smaller blue_tongue bonetrouble bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers canid canine carrying carrying_partner digital_media_(artwork) dog english_text feral feral_on_male feral_penetrating feral_penetrating_humanoid fontcest heart heart-shaped_pupils heart_eyes hooded_jacket hoodie implied_double_penetration implied_penetration implied_sex incest interspecies intraspecies larger_male larger_penetrating larger_penetrating_smaller legs_apart legs_spread male male/male male/male/male male_ahegao male_only male_penetrating mammal monochrome monster monster_boy papyrus papyrus_(undertale) papysans reverse_suspended_congress sans sans_(undertale) seme_papyrus sibling_incest siblings skeleton smaller_feral smaller_male smaller_penetrating solo_focus source_request spread_legs text threesome toby_fox tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_games white_background yaoi zoophilia
2d 2d_(artwork) ahegao animal animated_skeleton annoying_dog_(undertale) beastiality bigger_penetrating bigger_penetrating_smaller blue_tongue bonetrouble bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers canid canine carrying carrying_partner digital_media_(artwork) dog english_text feral feral_on_male feral_penetrating feral_penetrating_humanoid fontcest heart heart-shaped_pupils heart_eyes hooded_jacket hoodie implied_double_penetration implied_penetration implied_sex incest interspecies intraspecies larger_male larger_penetrating larger_penetrating_smaller legs_apart legs_spread male male/male male/male/male male_ahegao male_only male_penetrating mammal monochrome monster monster_boy papyrus papyrus_(undertale) papysans reverse_suspended_congress sans sans_(undertale) seme_papyrus sibling_incest siblings skeleton smaller_feral smaller_male smaller_penetrating solo_focus source_request spread_legs text threesome toby_fox tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_games white_background yaoi zoophilia
2010s 2018 2d 2d_(artwork) 5koma animated_skeleton artist_signature blue_tongue bottom_sans brother brother/brother brother_and_brother brothers clothed clothed_male clothing comic comic_panel digital_media_(artwork) duo ectotongue fontcest immolationyyx incest making_out monster orange_tongue papyrus papyrus_(undertale) papysans saliva_trail sans sans_(undertale) seme_papyrus sequence sequential skeleton textless tongue tongue_out top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2018 2d 2d_(artwork) 5koma animated_skeleton artist_signature blue_tongue bottom_sans brother brother/brother brother_and_brother brothers clothed clothed_male clothing comic comic_panel digital_media_(artwork) duo ectotongue fontcest immolationyyx incest making_out monster orange_tongue papyrus papyrus_(undertale) papysans saliva_trail sans sans_(undertale) seme_papyrus sequence sequential skeleton textless tongue tongue_out top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2020s 2022 2boys 2d 2d_(artwork) abosinsin anal anal_penetration anal_sex animated_skeleton arms_grab bad_id bad_twitter_id big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller black_legwear blue_hoodie blue_penis blush bodily_fluids bottom_sans bouncing_penis brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed cussing dialogue digital_media_(artwork) dirty_talk duo ectopenis english_text erect_while_penetrated fluids fontcest from_behind_position fully_clothed gloves grabbing_from_behind head_out_of_frame holding_arms hoodie inactive_account incest intraspecies kneeling larger_dom larger_male larger_penetrating larger_penetrating_smaller leaking_cum legwear male male/male male_only male_out_of_frame male_penetrated male_penetrating male_penetrating_male maledom moan moaning monster monster_boy motion_lines onomatopoeia papyrus papyrus_(undertale) papysans penetration penetration_from_behind penetration_through_clothes penis penis_through_clothing pounding prison_guard_position profanity red_gloves sans sans_(undertale) seme_papyrus sex sex_from_behind sex_through_clothes sex_through_clothing sibling_incest siblings size_difference skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smooth_penis swearing sweat text text_bubble thought_bubble thrusting top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games white_background yaoi
2020s 2022 2boys 2d 2d_(artwork) abosinsin anal anal_penetration anal_sex animated_skeleton arms_grab bad_id bad_twitter_id big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller black_legwear blue_hoodie blue_penis blush bodily_fluids bottom_sans bouncing_penis brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed cussing dialogue digital_media_(artwork) dirty_talk duo ectopenis english_text erect_while_penetrated fluids fontcest from_behind_position fully_clothed gloves grabbing_from_behind head_out_of_frame holding_arms hoodie inactive_account incest intraspecies kneeling larger_dom larger_male larger_penetrating larger_penetrating_smaller leaking_cum legwear male male/male male_only male_out_of_frame male_penetrated male_penetrating male_penetrating_male maledom moan moaning monster monster_boy motion_lines onomatopoeia papyrus papyrus_(undertale) papysans penetration penetration_from_behind penetration_through_clothes penis penis_through_clothing pounding prison_guard_position profanity red_gloves sans sans_(undertale) seme_papyrus sex sex_from_behind sex_through_clothes sex_through_clothing sibling_incest siblings size_difference skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smooth_penis swearing sweat text text_bubble thought_bubble thrusting top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games white_background yaoi
1:1 1:1_aspect_ratio 2020s 2021 2d 2d_(artwork) abosinsin anger_vein angry animated_skeleton bad_id bad_twitter_id blush bottom_sans brother brother/brother brother_and_brother brothers digital_media_(artwork) duo english_text fontcest from_behind grabbing_hand grabbing_hands hand_on_hand hands_grab imminent_sex implied_sex inactive_account incest intraspecies male male/male male_only monochrome monster monster_boy papyrus papyrus_(font) papyrus_(undertale) papysans sans sans_(undertale) seme_papyrus sibling_incest siblings skeleton sweat sweating text thought_bubble top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
1:1 1:1_aspect_ratio 2020s 2021 2d 2d_(artwork) abosinsin anger_vein angry animated_skeleton bad_id bad_twitter_id blush bottom_sans brother brother/brother brother_and_brother brothers digital_media_(artwork) duo english_text fontcest from_behind grabbing_hand grabbing_hands hand_on_hand hands_grab imminent_sex implied_sex inactive_account incest intraspecies male male/male male_only monochrome monster monster_boy papyrus papyrus_(font) papyrus_(undertale) papysans sans sans_(undertale) seme_papyrus sibling_incest siblings skeleton sweat sweating text thought_bubble top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2boys 2d 2d_(artwork) animated_skeleton big_dom_small_sub bigger_dom bigger_dom_smaller_sub blue_blush blue_penis blue_tongue blush bonetrouble bottom_sans brother brother/brother brother_and_brother brothers clothed_male cropped crying drawn drooling edited erection fontcest genitals handjob incest intraspecies kneel male male/male male_only monster monster_boy orange_blush pants_only papyrus papyrus_(undertale) papysans penis penis_grab saliva sans sans_(undertale) seme_papyrus shirtless sibling_incest siblings sitting skeleton small_sub small_sub_big_dom smaller_sub smaller_sub_bigger_dom smaller_submissive tears top_papyrus topless topless_male traditional_media traditional_media_(artwork) uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2boys 2d 2d_(artwork) animated_skeleton big_dom_small_sub bigger_dom bigger_dom_smaller_sub blue_blush blue_penis blue_tongue blush bonetrouble bottom_sans brother brother/brother brother_and_brother brothers clothed_male cropped crying drawn drooling edited erection fontcest genitals handjob incest intraspecies kneel male male/male male_only monster monster_boy orange_blush pants_only papyrus papyrus_(undertale) papysans penis penis_grab saliva sans sans_(undertale) seme_papyrus shirtless sibling_incest siblings sitting skeleton small_sub small_sub_big_dom smaller_sub smaller_sub_bigger_dom smaller_submissive tears top_papyrus topless topless_male traditional_media traditional_media_(artwork) uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2016 2boys 2d 2d_(artwork) against_wall anal animated_skeleton arms_around_another arms_around_another's_neck arms_around_neck artist_name backwards_hat big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_female bigger_male bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_penis blue_saliva bluetrashsins blush bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers cap carrying carrying_partner carrying_position digital_media_(artwork) drooling duo ectopenis fontcest gay genitals glowing glowing_eye glowing_penis hands_around_neck hoodie incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy orange_blush orange_penis orange_saliva papyrus papyrus_(undertale) papysans penetration red_cap sans sans_(undertale) seme_papyrus sex shirt_only sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom stand_and_carry_position suspended_congress tears top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games wall_sex yaoi
2010s 2016 2boys 2d 2d_(artwork) against_wall anal animated_skeleton arms_around_another arms_around_another's_neck arms_around_neck artist_name backwards_hat big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_female bigger_male bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_penis blue_saliva bluetrashsins blush bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers cap carrying carrying_partner carrying_position digital_media_(artwork) drooling duo ectopenis fontcest gay genitals glowing glowing_eye glowing_penis hands_around_neck hoodie incest intraspecies jacket larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy orange_blush orange_penis orange_saliva papyrus papyrus_(undertale) papysans penetration red_cap sans sans_(undertale) seme_papyrus sex shirt_only sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom stand_and_carry_position suspended_congress tears top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games wall_sex yaoi
2010s 2017 2boys 2d 2d_(artwork) animated_skeleton big_penis bottom_sans brother brother/brother brother_penetrating_brother brothers completely_nude digital_media_(artwork) duo ectopenis fontcest from_front_position glowing glowing_penis grabbing_leg grabbing_sheets gripping_sheets incest intraspecies male male/male male_only male_penetrating missionary missionary_position monster monster_boy nude orange_penis papyrus papyrus_(undertale) papysans penetration penis sans sans_(undertale) seme_papyrus sex sheet_grab sibling_incest siblings simple_background sinncognito skeleton tears tongue_out top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2017 2boys 2d 2d_(artwork) animated_skeleton big_penis bottom_sans brother brother/brother brother_penetrating_brother brothers completely_nude digital_media_(artwork) duo ectopenis fontcest from_front_position glowing glowing_penis grabbing_leg grabbing_sheets gripping_sheets incest intraspecies male male/male male_only male_penetrating missionary missionary_position monster monster_boy nude orange_penis papyrus papyrus_(undertale) papysans penetration penis sans sans_(undertale) seme_papyrus sex sheet_grab sibling_incest siblings simple_background sinncognito skeleton tears tongue_out top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
1boy 1cuntboy 2010s 2017 after_sex after_vaginal animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother/brother brothers clitoris closed_eyes clothed_male couch cum_leak cum_leaking cum_leaking_out_of_pussy cuntboy cuntboy_focus cuntboysub dominant_male duo ectoplasm ectopussy fontcest gloves hooded_jacket hoodie incest jacket larger_male legs_apart legs_spread male male/cuntboy maledom mmmemmo monster on_couch on_sofa papyrus papyrus_(undertale) papysans pussy pussy_juice pussy_juice_drip red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set shirt_lift shirt_up sitting sitting_on_couch skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_sub smaller_sub_bigger_dom socks socks_on sofa spread_legs spread_pussy submissive_cuntboy top_papyrus touching_pussy uke_sans undead undertale undertale_(series) unseen_male_face yaoi
1boy 1cuntboy 2010s 2017 after_sex after_vaginal animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother/brother brothers clitoris closed_eyes clothed_male couch cum_leak cum_leaking cum_leaking_out_of_pussy cuntboy cuntboy_focus cuntboysub dominant_male duo ectoplasm ectopussy fontcest gloves hooded_jacket hoodie incest jacket larger_male legs_apart legs_spread male male/cuntboy maledom mmmemmo monster on_couch on_sofa papyrus papyrus_(undertale) papysans pussy pussy_juice pussy_juice_drip red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set shirt_lift shirt_up sitting sitting_on_couch skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_sub smaller_sub_bigger_dom socks socks_on sofa spread_legs spread_pussy submissive_cuntboy top_papyrus touching_pussy uke_sans undead undertale undertale_(series) unseen_male_face yaoi
1boy 1cuntboy 2010s 2017 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother/brother brothers clitoris closed_eyes clothed_male couch couch_sex cum cum_in_pussy cum_inside cuntboy cuntboy_focus cuntboy_penetrated cuntboysub digital_media_(artwork) dominant_male duo ectopenis ectoplasm ectopussy fontcest genitals gloves hooded_jacket hoodie incest jacket larger_male larger_penetrating larger_penetrating_smaller legs_apart legs_spread male male/cuntboy male_penetrating male_penetrating_cuntboy maledom mmmemmo monster on_couch on_sofa orange_penis papyrus papyrus_(undertale) papysans penetration penis penis_in_pussy penis_through_clothing pussy pussy_juice pussy_juice_drip red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex shirt_lift shirt_up sitting sitting_on_couch skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_penetrated smaller_sub smaller_sub_bigger_dom socks socks_on sofa spread_legs spread_pussy submissive_cuntboy top_papyrus touching_pussy uke_sans undead undertale undertale_(series) unseen_male_face vaginal vaginal_penetration vaginal_sex veiny_penis video_game_character video_games x-ray yaoi
1boy 1cuntboy 2010s 2017 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother/brother brothers clitoris closed_eyes clothed_male couch couch_sex cum cum_in_pussy cum_inside cuntboy cuntboy_focus cuntboy_penetrated cuntboysub digital_media_(artwork) dominant_male duo ectopenis ectoplasm ectopussy fontcest genitals gloves hooded_jacket hoodie incest jacket larger_male larger_penetrating larger_penetrating_smaller legs_apart legs_spread male male/cuntboy male_penetrating male_penetrating_cuntboy maledom mmmemmo monster on_couch on_sofa orange_penis papyrus papyrus_(undertale) papysans penetration penis penis_in_pussy penis_through_clothing pussy pussy_juice pussy_juice_drip red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex shirt_lift shirt_up sitting sitting_on_couch skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_penetrated smaller_sub smaller_sub_bigger_dom socks socks_on sofa spread_legs spread_pussy submissive_cuntboy top_papyrus touching_pussy uke_sans undead undertale undertale_(series) unseen_male_face vaginal vaginal_penetration vaginal_sex veiny_penis video_game_character video_games x-ray yaoi
1boy 1cuntboy 2010s 2017 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother/brother brothers clitoris clothed_male couch couch_sex cuntboy cuntboy_focus cuntboy_penetrated cuntboysub digital_media_(artwork) dominant_male duo ectopenis ectoplasm ectopussy fontcest genitals gloves hooded_jacket hoodie incest jacket larger_male larger_penetrating larger_penetrating_smaller legs_apart legs_spread male male/cuntboy male_penetrating male_penetrating_cuntboy maledom mmmemmo monster on_couch on_sofa orange_penis papyrus papyrus_(undertale) papysans penetration penis penis_in_pussy penis_through_clothing pussy pussy_juice pussy_juice_drip red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex shirt_lift shirt_up sitting sitting_on_couch skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_penetrated smaller_sub smaller_sub_bigger_dom socks socks_on sofa spread_legs spread_pussy submissive_cuntboy top_papyrus touching_pussy uke_sans undead undertale undertale_(series) unseen_male_face vaginal vaginal_penetration vaginal_sex veiny_penis video_game_character video_games x-ray yaoi
1boy 1cuntboy 2010s 2017 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother/brother brothers clitoris clothed_male couch couch_sex cuntboy cuntboy_focus cuntboy_penetrated cuntboysub digital_media_(artwork) dominant_male duo ectopenis ectoplasm ectopussy fontcest genitals gloves hooded_jacket hoodie incest jacket larger_male larger_penetrating larger_penetrating_smaller legs_apart legs_spread male male/cuntboy male_penetrating male_penetrating_cuntboy maledom mmmemmo monster on_couch on_sofa orange_penis papyrus papyrus_(undertale) papysans penetration penis penis_in_pussy penis_through_clothing pussy pussy_juice pussy_juice_drip red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex shirt_lift shirt_up sitting sitting_on_couch skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_penetrated smaller_sub smaller_sub_bigger_dom socks socks_on sofa spread_legs spread_pussy submissive_cuntboy top_papyrus touching_pussy uke_sans undead undertale undertale_(series) unseen_male_face vaginal vaginal_penetration vaginal_sex veiny_penis video_game_character video_games x-ray yaoi
1boy 1cuntboy 2010s 2017 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother/brother brothers clitoris clothed_male couch couch_sex cuntboy cuntboy_focus cuntboy_penetrated cuntboysub digital_media_(artwork) dominant_male duo ectopenis ectoplasm ectopussy fontcest genitals gloves hooded_jacket hoodie incest jacket larger_male larger_penetrating larger_penetrating_smaller legs_apart legs_spread male male/cuntboy male_penetrating male_penetrating_cuntboy maledom mmmemmo monster on_couch on_sofa orange_penis papyrus papyrus_(undertale) papysans penetration penis penis_in_pussy penis_through_clothing pussy pussy_juice pussy_juice_drip red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex shirt_lift shirt_up sitting sitting_on_couch skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_penetrated smaller_sub smaller_sub_bigger_dom socks socks_on sofa spread_legs spread_pussy submissive_cuntboy top_papyrus touching_pussy uke_sans undead undertale undertale_(series) unseen_male_face vaginal vaginal_penetration vaginal_sex veiny_penis video_game_character video_games yaoi
1boy 1cuntboy 2010s 2017 2d 2d_(artwork) animated_skeleton bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans bottomless brother brother/brother brothers clitoris clothed_male couch couch_sex cuntboy cuntboy_focus cuntboy_penetrated cuntboysub digital_media_(artwork) dominant_male duo ectopenis ectoplasm ectopussy fontcest genitals gloves hooded_jacket hoodie incest jacket larger_male larger_penetrating larger_penetrating_smaller legs_apart legs_spread male male/cuntboy male_penetrating male_penetrating_cuntboy maledom mmmemmo monster on_couch on_sofa orange_penis papyrus papyrus_(undertale) papysans penetration penis penis_in_pussy penis_through_clothing pussy pussy_juice pussy_juice_drip red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex shirt_lift shirt_up sitting sitting_on_couch skeleton small_sub small_sub_big_dom smaller_cuntboy smaller_penetrated smaller_sub smaller_sub_bigger_dom socks socks_on sofa spread_legs spread_pussy submissive_cuntboy top_papyrus touching_pussy uke_sans undead undertale undertale_(series) unseen_male_face vaginal vaginal_penetration vaginal_sex veiny_penis video_game_character video_games yaoi