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3_girls ass_focus ass_up blue_skin brightney_(dandy's_world) dandy's_world red_skin shelly_(dandy's_world) socks_on stockings tisha_(dandy's_world) variant
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2020s 2022 2d 2d_(artwork) absurd_res absurdres animated_skeleton blue_hoodie blue_jacket bottom_sans bottomless bound bound_legs bound_wrists digital_media_(artwork) forced_prostitution hooded_jacket hoodie jacket japanese_text konoha6_(pixiv_id_1724049) large_filesize legs_apart legs_forced_open monster monster_boy prostitution restrained restraints sans sans_(undertale) sequence sequential skeleton socks socks_on submissive text text_bubble uke_sans undead undertale undertale_(series) video_games
2020s 2022 2d 2d_(artwork) absurd_res absurdres animated_skeleton blue_hoodie blue_jacket bottom_sans bottomless bound bound_legs bound_wrists digital_media_(artwork) forced_prostitution hooded_jacket hoodie jacket japanese_text konoha6_(pixiv_id_1724049) large_filesize legs_apart legs_forced_open monster monster_boy prostitution restrained restraints sans sans_(undertale) sequence sequential skeleton socks socks_on submissive text text_bubble uke_sans undead undertale undertale_(series) 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
2010s 2019 animated_skeleton anminshing artist_name blue_blush blue_hoodie blue_jacket blush bottom_sans bottomless censor_bar censored_penis censored_pussy clitoris closed_eyes cum cum_while_penetrated ectopenis ectoplasm ectopussy ejaculating_while_penetrated ejaculation ejaculation_while_penetrated hands_behind_head hooded_jacket hoodie intersex jacket japanese_text legs_apart legs_spread monster penetration penis pussy sans sans_(undertale) sex shing-kanakugi skeleton socks socks_on solo_focus spread_legs text uke_sans undead undertale undertale_(series) white_background
2010s 2019 animated_skeleton anminshing artist_name blue_blush blue_hoodie blue_jacket blush bottom_sans bottomless censor_bar censored_penis censored_pussy clitoris closed_eyes cum cum_while_penetrated ectopenis ectoplasm ectopussy ejaculating_while_penetrated ejaculation ejaculation_while_penetrated hands_behind_head hooded_jacket hoodie intersex jacket japanese_text legs_apart legs_spread monster penetration penis pussy sans sans_(undertale) sex shing-kanakugi skeleton socks socks_on solo_focus spread_legs text uke_sans undead undertale undertale_(series) white_background
2010s 2019 animated_skeleton anminshing artist_name blue_blush blue_hoodie blue_jacket blush bottom_sans bottomless censor_bar censored_penis censored_pussy clitoris ectopenis ectoplasm ectopussy hands_behind_head hooded_jacket hoodie intersex jacket japanese_text legs_apart legs_spread looking_down monster penetration penis pussy sans sans_(undertale) sex shing-kanakugi skeleton socks socks_on solo_focus spread_legs text uke_sans undead undertale undertale_(series) vaginal vaginal_penetration vaginal_sex white_background
2010s 2019 animated_skeleton anminshing artist_name blue_blush blue_hoodie blue_jacket blush bottom_sans bottomless censor_bar censored_penis censored_pussy clitoris ectopenis ectoplasm ectopussy hands_behind_head hooded_jacket hoodie intersex jacket japanese_text legs_apart legs_spread looking_down monster penetration penis pussy sans sans_(undertale) sex shing-kanakugi skeleton socks socks_on solo_focus spread_legs text uke_sans undead undertale undertale_(series) vaginal vaginal_penetration vaginal_sex white_background
1boy 2d 2d_(artwork) absurd_res absurdres animated_skeleton arm_support artist_name bedroom blue_blush blue_penis blush digital_media_(artwork) ectopenis erect_penis erection genital_fluids genitals gloves gloves_only guns_(artist) humanoid imminent_masturbation in_bed large_filesize leaking_penis leaking_precum looking_at_genitalia looking_at_own_penis looking_at_penis looking_at_self looking_down looking_down_at_self male male_only mattress monster monster_boy morning_wood nude nude_male on_bed penis pillow precum sans sans_(undertale) sitting sitting_on_bed skeleton slippers socks socks_on socks_only solo_male spread_legs sweat third-party_source undead undertale undertale_(series) video_game_character video_games white_gloves white_socks window
1boy 2d 2d_(artwork) absurd_res absurdres animated_skeleton arm_support artist_name bedroom blue_blush blue_penis blush digital_media_(artwork) ectopenis erect_penis erection genital_fluids genitals gloves gloves_only guns_(artist) humanoid imminent_masturbation in_bed large_filesize leaking_penis leaking_precum looking_at_genitalia looking_at_own_penis looking_at_penis looking_at_self looking_down looking_down_at_self male male_only mattress monster monster_boy morning_wood nude nude_male on_bed penis pillow precum sans sans_(undertale) sitting sitting_on_bed skeleton slippers socks socks_on socks_only solo_male spread_legs sweat third-party_source undead undertale undertale_(series) video_game_character video_games white_gloves white_socks window
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
2020s 2022 2d 2d_(artwork) animated_skeleton arm_grab bad_id bad_twitter_id black_and_white bottom_sans clothed covering_mouth digital_media_(artwork) fingering fingering_another fingering_partner gaster gaster_(undertale) grabbing_arm grabbing_hand hand hand_grab hand_on_mouth hands inactive_account male male_focus male_only monochrome monster monster_boy multiple_hands non-con non-consensual noncon nonconsensual pants_pull pants_pulled_down sans sans_(undertale) sanster seme_gaster shirt_lift shirt_pull shirt_up simple_background skeleton socks_on solo_focus top_gaster toubigaizi twitter uke_sans undead undertale undertale_(series) undressing unseen_character unseen_male_face video_game_character video_games white_hair yaoi
2020s 2022 2d 2d_(artwork) animated_skeleton arm_grab bad_id bad_twitter_id black_and_white bottom_sans clothed covering_mouth digital_media_(artwork) fingering fingering_another fingering_partner gaster gaster_(undertale) grabbing_arm grabbing_hand hand hand_grab hand_on_mouth hands inactive_account male male_focus male_only monochrome monster monster_boy multiple_hands non-con non-consensual noncon nonconsensual pants_pull pants_pulled_down sans sans_(undertale) sanster seme_gaster shirt_lift shirt_pull shirt_up simple_background skeleton socks_on solo_focus top_gaster toubigaizi twitter uke_sans undead undertale undertale_(series) undressing unseen_character unseen_male_face video_game_character video_games white_hair yaoi
1boy animated_skeleton artist_request black_bunny_ears black_bunnysuit bunny_ears bunny_tail bunnysuit comic_sans crossdressing english_text fishnet_legwear japanese_text male male_only monster rabbit_ears rabbit_tail sans sans_(undertale) sitting skeleton socks socks_on speech_bubble sweat text text_bubble undead undertale undertale_(series)
1boy animated_skeleton artist_request black_bunny_ears black_bunnysuit bunny_ears bunny_tail bunnysuit comic_sans crossdressing english_text fishnet_legwear japanese_text male male_only monster rabbit_ears rabbit_tail sans sans_(undertale) sitting skeleton socks socks_on speech_bubble sweat text text_bubble undead undertale undertale_(series)
2010s 2018 2d animated_skeleton big_penis bottom_sans bound_wrists digital_media_(artwork) disembodied_penis grey_penis imminent_penetration imminent_sex looking_down macro_male macrophilia male male_focus male_only microphilia nsfwgarbagedump penis pixiv_id_36285069 sans sans_(undertale) size_difference skeleton socks socks_on solo_focus testicle testicles tied_up uke_sans undead undertale undertale_(series) veiny_penis video_game_character white_background yaoi
2010s 2018 2d animated_skeleton big_penis bottom_sans bound_wrists digital_media_(artwork) disembodied_penis grey_penis imminent_penetration imminent_sex looking_down macro_male macrophilia male male_focus male_only microphilia nsfwgarbagedump penis pixiv_id_36285069 sans sans_(undertale) size_difference skeleton socks socks_on solo_focus testicle testicles tied_up uke_sans undead undertale undertale_(series) veiny_penis video_game_character white_background yaoi
1:1 1:1_aspect_ratio 2010s 2018 2boys anal animated_skeleton artist_name artist_signature ass big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_penetrating bigger_penetrating_smaller blue_blush blue_body blue_glans blue_penis blue_tongue blush bottom_sans bottomless bottomless_male bound bound_wrists brother brother/brother brother_and_brother brother_penetrating_brother brothers choker clothed collar doggy_position duo ectobody ectopenis ectotongue fontcest from_behind from_behind_position gay handcuffed handcuffs incest larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy nsfwgarbagedump orange_blush orange_body papyrus papyrus_(undertale) papysans partially_clothed penetration penetration_from_behind penis pixiv_id_36285069 restrained restraints 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 socks socks_on tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) white_background yaoi
1:1 1:1_aspect_ratio 2010s 2018 2boys anal animated_skeleton artist_name artist_signature ass big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_penetrating bigger_penetrating_smaller blue_blush blue_body blue_glans blue_penis blue_tongue blush bottom_sans bottomless bottomless_male bound bound_wrists brother brother/brother brother_and_brother brother_penetrating_brother brothers choker clothed collar doggy_position duo ectobody ectopenis ectotongue fontcest from_behind from_behind_position gay handcuffed handcuffs incest larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male monster monster_boy nsfwgarbagedump orange_blush orange_body papyrus papyrus_(undertale) papysans partially_clothed penetration penetration_from_behind penis pixiv_id_36285069 restrained restraints 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 socks socks_on tongue tongue_out top_papyrus uke_sans undead undertale undertale_(series) white_background yaoi
1:1 1:1_aspect_ratio 2010s 2018 2boys 2d 2d_(artwork) alternate_clothing alternate_costume anal animated_skeleton big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_penetrating bigger_penetrating_smaller blue_blush blush bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers carrying_partner clothed couch couch_sex crying crying_with_eyes_closed digital_media_(artwork) dominant dominant_male domination door duo ectopenis floor fontcest furniture green_couch hi_res high_res highres implied_bondage incest indoors larger_penetrating larger_penetrating_smaller legs_apart legs_held_open legs_spread living_room male male_only male_penetrated male_penetrating male_penetrating_male maledom monster monster_boy non-consensual noncon nonconsensual nsfwgarbagedump on_couch on_sofa orange_penis papyrus papyrus_(undertale) papysans partially_clothed penetration penis pixiv_id_36285069 rape reverse_suspended_congress sans sans_(undertale) seme_papyrus sex sibling_incest siblings sitting sitting_on_couch sitting_on_sofa skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks socks_on sofa submissive tears top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games yandere yaoi
1:1 1:1_aspect_ratio 2010s 2018 2boys 2d 2d_(artwork) alternate_clothing alternate_costume anal animated_skeleton big_dom big_dom_small_sub big_penis bigger_dom bigger_dom_smaller_sub bigger_penetrating bigger_penetrating_smaller blue_blush blush bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers carrying_partner clothed couch couch_sex crying crying_with_eyes_closed digital_media_(artwork) dominant dominant_male domination door duo ectopenis floor fontcest furniture green_couch hi_res high_res highres implied_bondage incest indoors larger_penetrating larger_penetrating_smaller legs_apart legs_held_open legs_spread living_room male male_only male_penetrated male_penetrating male_penetrating_male maledom monster monster_boy non-consensual noncon nonconsensual nsfwgarbagedump on_couch on_sofa orange_penis papyrus papyrus_(undertale) papysans partially_clothed penetration penis pixiv_id_36285069 rape reverse_suspended_congress sans sans_(undertale) seme_papyrus sex sibling_incest siblings sitting sitting_on_couch sitting_on_sofa skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks socks_on sofa submissive tears top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games yandere yaoi
2010s 2018 animated_skeleton artist_name blue_blush blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless censored_penis closed_eyes clothed crying crying_with_eyes_closed cum cum_inside cum_on_self cum_while_penetrated cumshot dominant_pov drooling ectopenis ectoplasm ejaculation hooded_jacket hoodie jacket japanese_text male male_pov monster orgasm penetrating_pov penetration penetrator_pov penis pov sans sans_(undertale) sex shing-kanakugi skeleton socks socks_on tears text uke_sans undead undertale undertale_(series) unseen_male unseen_male_face
2010s 2018 animated_skeleton artist_name blue_blush blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless censored_penis closed_eyes clothed crying crying_with_eyes_closed cum cum_inside cum_on_self cum_while_penetrated cumshot dominant_pov drooling ectopenis ectoplasm ejaculation hooded_jacket hoodie jacket japanese_text male male_pov monster orgasm penetrating_pov penetration penetrator_pov penis pov sans sans_(undertale) sex shing-kanakugi skeleton socks socks_on tears text uke_sans undead undertale undertale_(series) unseen_male unseen_male_face
2010s 2018 animated_skeleton artist_name blue_blush blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless bouncing_penis censor_bar censored_penis clothed crying dominant_pov drooling ectopenis ectoplasm grabbing_sheets gripping_sheets hooded_jacket hoodie jacket japanese_text looking_at_viewer male male_pov monster penetrating_pov penetration penetrator_pov penis pov sans sans_(undertale) sex sheet_grab shing-kanakugi skeleton socks socks_on tears text uke_sans undead undertale undertale_(series) unseen_male unseen_male_face
2010s 2018 animated_skeleton artist_name blue_blush blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless bouncing_penis censor_bar censored_penis clothed crying dominant_pov drooling ectopenis ectoplasm grabbing_sheets gripping_sheets hooded_jacket hoodie jacket japanese_text looking_at_viewer male male_pov monster penetrating_pov penetration penetrator_pov penis pov sans sans_(undertale) sex sheet_grab shing-kanakugi skeleton socks socks_on tears text uke_sans undead undertale undertale_(series) unseen_male unseen_male_face
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
1boy 1cuntboy 2010s 2017 2d 2d_(artwork) animated_skeleton bad_id bad_tumblr_id 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 brother_and_brother brothers clitoris clothed_male couch cuntboy cuntboy_focus cuntboysub digital_media_(artwork) dominant_male duo ectoplasm ectopussy fontcest gloves hooded_jacket hoodie imminent_penetration imminent_sex imminent_vaginal incest jacket larger_male legs_apart legs_spread male male/cuntboy maledom mmmemmo monster monster_boy 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 sibling_incest siblings 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 video_games yaoi
1boy 1cuntboy 2010s 2017 2d 2d_(artwork) animated_skeleton bad_id bad_tumblr_id 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 brother_and_brother brothers clitoris clothed_male couch cuntboy cuntboy_focus cuntboysub digital_media_(artwork) dominant_male duo ectoplasm ectopussy fontcest gloves hooded_jacket hoodie imminent_penetration imminent_sex imminent_vaginal incest jacket larger_male legs_apart legs_spread male male/cuntboy maledom mmmemmo monster monster_boy 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 sibling_incest siblings 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 video_games yaoi