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1boy 2010s 2016 2d 2d_(artwork) ahegao animated_skeleton ass bed_sheet blue_eye blue_hoodie blue_jacket bottom_sans bottomless bottomless_male comic_sans dialogue digital_media_(artwork) drooling english_text glowing grabbing_sheets hoodie jacket male male_only mmmemmo monster on_bed partially_clothed partially_clothed_male sans sans_(undertale) sheet_grab skeleton socks soul sweat talking talking_to_viewer text tongue topwear trembling uke_sans undead undertale undertale_(series) video_games
1boy 2010s 2016 2d 2d_(artwork) ahegao animated_skeleton ass bed_sheet blue_eye blue_hoodie blue_jacket bottom_sans bottomless bottomless_male comic_sans dialogue digital_media_(artwork) drooling english_text glowing grabbing_sheets hoodie jacket male male_only mmmemmo monster on_bed partially_clothed partially_clothed_male sans sans_(undertale) sheet_grab skeleton socks soul sweat talking talking_to_viewer text tongue topwear trembling uke_sans undead undertale undertale_(series) video_games
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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
2010s 2017 2boys anal animated_skeleton bed_sheet bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers closed_eyes clothed cum cum_on_face cum_on_self duo ectopenis fingers_interlocked fontcest from_front_position gay gay_sex gloves grabbing_sheets gripping_sheets hooded_jacket hoodie incest indoors interlocked_fingers intertwined_fingers intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male missionary_position mmmemmo monster monster_boy orange_blush papyrus papyrus_(undertale) papysans penetration penis red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom sweat tears top_papyrus uke_sans undead undertale undertale_(series) visible_breath yaoi
2010s 2017 2boys anal animated_skeleton bed_sheet bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers closed_eyes clothed cum cum_on_face cum_on_self duo ectopenis fingers_interlocked fontcest from_front_position gay gay_sex gloves grabbing_sheets gripping_sheets hooded_jacket hoodie incest indoors interlocked_fingers intertwined_fingers intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male missionary_position mmmemmo monster monster_boy orange_blush papyrus papyrus_(undertale) papysans penetration penis red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom sweat tears top_papyrus uke_sans undead undertale undertale_(series) visible_breath yaoi
2010s 2017 2boys anal animated_skeleton bed_sheet bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers closed_eyes clothed cum cum_on_face cum_on_self cum_while_penetrated cumshot duo ectopenis fingers_interlocked fontcest from_front_position gay gay_sex gloves grabbing_sheets gripping_sheets hooded_jacket hoodie incest indoors interlocked_fingers intertwined_fingers intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male missionary_position mmmemmo monster monster_boy orange_blush papyrus papyrus_(undertale) papysans penetration penis red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom sweat tears top_papyrus uke_sans undead undertale undertale_(series) visible_breath yaoi
2010s 2017 2boys anal animated_skeleton bed_sheet bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers closed_eyes clothed cum cum_on_face cum_on_self cum_while_penetrated cumshot duo ectopenis fingers_interlocked fontcest from_front_position gay gay_sex gloves grabbing_sheets gripping_sheets hooded_jacket hoodie incest indoors interlocked_fingers intertwined_fingers intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male missionary_position mmmemmo monster monster_boy orange_blush papyrus papyrus_(undertale) papysans penetration penis red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom sweat tears top_papyrus uke_sans undead undertale undertale_(series) visible_breath yaoi
2010s 2017 2boys anal animated_skeleton bed_sheet bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed duo ectopenis fingers_interlocked fontcest from_front_position gay gay_sex gloves grabbing_sheets gripping_sheets hooded_jacket hoodie incest indoors interlocked_fingers intertwined_fingers intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male missionary_position mmmemmo monster monster_boy orange_blush papyrus papyrus_(undertale) papysans penetration penis red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom sweat top_papyrus uke_sans undead undertale undertale_(series) visible_breath yaoi
2010s 2017 2boys anal animated_skeleton bed_sheet bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed duo ectopenis fingers_interlocked fontcest from_front_position gay gay_sex gloves grabbing_sheets gripping_sheets hooded_jacket hoodie incest indoors interlocked_fingers intertwined_fingers intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male missionary_position mmmemmo monster monster_boy orange_blush papyrus papyrus_(undertale) papysans penetration penis red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom sweat top_papyrus uke_sans undead undertale undertale_(series) visible_breath yaoi
2010s 2017 2boys anal animated_skeleton bed_sheet bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed duo ectopenis fingers_interlocked fontcest from_front_position gay gay_sex gloves grabbing_sheets gripping_sheets hooded_jacket hoodie incest indoors interlocked_fingers intertwined_fingers intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male missionary_position mmmemmo monster monster_boy orange_blush papyrus papyrus_(undertale) papysans penetration penis red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom sweat top_papyrus uke_sans undead undertale undertale_(series) visible_breath yaoi
2010s 2017 2boys anal animated_skeleton bed_sheet bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blue_penis blush bottom_sans bottomless brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed duo ectopenis fingers_interlocked fontcest from_front_position gay gay_sex gloves grabbing_sheets gripping_sheets hooded_jacket hoodie incest indoors interlocked_fingers intertwined_fingers intraspecies larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male missionary_position mmmemmo monster monster_boy orange_blush papyrus papyrus_(undertale) papysans penetration penis red_gloves sans sans_(undertale) seme_papyrus sequence sequential sequential_art sequential_set sex sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom sweat top_papyrus uke_sans undead undertale undertale_(series) visible_breath yaoi
1boy 2010s 2017 2d 2d_(artwork) anal anal_fingering animated_skeleton blue_blush blue_hoodie blue_jacket blue_penis blush clothed clothed_male clothing digital_media_(artwork) double_masturbation drooling ectoplasm fingering fingering_ass fingering_self fully_clothed genitals hooded_jacket hoodie indoors jacket looking_pleasured male male_masturbation male_moaning male_only masturbation mmmemmo moaning monster monster_boy onomatopoeia penile penile_masturbation penis pink_slippers pleasure_face sans sans_(undertale) sitting skeleton slippers solo_male undead undertale undertale_(series) video_game_character video_games
1boy 2010s 2017 2d 2d_(artwork) anal anal_fingering animated_skeleton blue_blush blue_hoodie blue_jacket blue_penis blush clothed clothed_male clothing digital_media_(artwork) double_masturbation drooling ectoplasm fingering fingering_ass fingering_self fully_clothed genitals hooded_jacket hoodie indoors jacket looking_pleasured male male_masturbation male_moaning male_only masturbation mmmemmo moaning monster monster_boy onomatopoeia penile penile_masturbation penis pink_slippers pleasure_face sans sans_(undertale) sitting skeleton slippers solo_male undead undertale undertale_(series) video_game_character video_games
2010s 2016 2d 2d_(artwork) 3koma animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blush book bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed comic comic_panel comic_sans digital_media_(artwork) duo english_text fontcest from_behind_position fully_clothed gloves headphones heart-shaped_pupils heart_eyes holding_book holding_microphone holding_object hooded_jacket hoodie implied_cuntboy implied_penetration implied_pussy implied_sex implied_vaginal incest intraspecies jacket larger_penetrating larger_penetrating_smaller male microphone mmmemmo monster monster_boy mounting onomatopoeia orange_background orange_blush papyrus papyrus_(undertale) papysans penetration_from_behind reading red_gloves 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 solid_color_background text top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2016 2d 2d_(artwork) 3koma animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_penetrating bigger_penetrating_smaller blue_blush blue_hoodie blue_jacket blush book bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed comic comic_panel comic_sans digital_media_(artwork) duo english_text fontcest from_behind_position fully_clothed gloves headphones heart-shaped_pupils heart_eyes holding_book holding_microphone holding_object hooded_jacket hoodie implied_cuntboy implied_penetration implied_pussy implied_sex implied_vaginal incest intraspecies jacket larger_penetrating larger_penetrating_smaller male microphone mmmemmo monster monster_boy mounting onomatopoeia orange_background orange_blush papyrus papyrus_(undertale) papysans penetration_from_behind reading red_gloves 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 solid_color_background text top_papyrus tumblr uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2016 2boys 2d 2d_(artwork) against_the_wall against_wall anal animated_skeleton ass big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_hoodie blue_jacket blue_penis blush bodyguard_position bottom_sans brother/brother brother_and_brother brother_penetrating_brother brothers butt clothed clothed_male clothed_sex comic_sans cum cum_on_wall cum_while_penetrated digital_media_(artwork) dirty_talk duo ectopenis ectotongue english_text fontcest from_behind from_behind_position fully_clothed gay gay_sex gloves grabbing_penis handjob handjob_while_penetrating hoodie incest intraspecies jacket larger_penetrating larger_penetrating_smaller licking licking_face male male/male male_penetrated male_penetrating male_penetrating_male mmmemmo monster monster_boy onomatopoeia orange_blush orange_penis orange_tongue papyrus papyrus_(undertale) papysans penetration penetration_from_behind penetration_through_clothes penis penis_in_anus penis_in_ass penis_through_clothing red_gloves sans sans_(undertale) seme_papyrus sex sex_from_behind sex_through_clothes sex_through_clothing sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom standing_sex talking_to_another talking_to_partner text text_bubble thrusting thrusting_into_ass tongue top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games yaoi
2010s 2016 2boys 2d 2d_(artwork) against_the_wall against_wall anal animated_skeleton ass big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_penetrating bigger_penetrating_smaller blue_blush blue_cum blue_hoodie blue_jacket blue_penis blush bodyguard_position bottom_sans brother/brother brother_and_brother brother_penetrating_brother brothers butt clothed clothed_male clothed_sex comic_sans cum cum_on_wall cum_while_penetrated digital_media_(artwork) dirty_talk duo ectopenis ectotongue english_text fontcest from_behind from_behind_position fully_clothed gay gay_sex gloves grabbing_penis handjob handjob_while_penetrating hoodie incest intraspecies jacket larger_penetrating larger_penetrating_smaller licking licking_face male male/male male_penetrated male_penetrating male_penetrating_male mmmemmo monster monster_boy onomatopoeia orange_blush orange_penis orange_tongue papyrus papyrus_(undertale) papysans penetration penetration_from_behind penetration_through_clothes penis penis_in_anus penis_in_ass penis_through_clothing red_gloves sans sans_(undertale) seme_papyrus sex sex_from_behind sex_through_clothes sex_through_clothing sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom standing_sex talking_to_another talking_to_partner text text_bubble thrusting thrusting_into_ass tongue top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games 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
1:1 1:1_aspect_ratio 1boy 1cuntboy 2010s 2017 2d 2d_(artwork) 2koma animated_skeleton blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans brother brother/brother brother_and_brother brothers clitoris comic comic_panel comic_sans cuntboy cuntboy_focus digital_media_(artwork) duo ectopussy ectotongue english_text fluids fontcest genitals gloves hoodie incest indoors intraspecies jacket licking_pussy male male/cuntboy mmmemmo monster monster_boy orange_tongue papyrus papyrus_(undertale) papysans pussy pussylicking red_gloves sans sans_(undertale) seme_papyrus sibling_incest siblings skeleton solo_focus text tongue top_papyrus tumblr uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi
1:1 1:1_aspect_ratio 1boy 1cuntboy 2010s 2017 2d 2d_(artwork) 2koma animated_skeleton blue_blush blue_clitoris blue_hoodie blue_jacket blue_pussy blush bottom_sans brother brother/brother brother_and_brother brothers clitoris comic comic_panel comic_sans cuntboy cuntboy_focus digital_media_(artwork) duo ectopussy ectotongue english_text fluids fontcest genitals gloves hoodie incest indoors intraspecies jacket licking_pussy male male/cuntboy mmmemmo monster monster_boy orange_tongue papyrus papyrus_(undertale) papysans pussy pussylicking red_gloves sans sans_(undertale) seme_papyrus sibling_incest siblings skeleton solo_focus text tongue top_papyrus tumblr uke_sans undead undertale undertale_(series) unseen_male_face video_game_character video_games yaoi