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2d boner boner_blossom bones brother brother/brother bulge color comic dialogue english english_dialogue english_text gay male papyrus rubbing rubbing_penis sans small_dom_big_sub speech_bubble stroking_penis tagme text undertale undertale_(series)
2d boner boner_blossom bones brother brother/brother bulge color comic dialogue english english_dialogue english_text gay male papyrus rubbing rubbing_penis sans small_dom_big_sub speech_bubble stroking_penis tagme text undertale undertale_(series)
1boy 1boy1girl 1girls 2d after_sex anal anal_sex artist_name blush boner_blossom bottomless closed_eyes color comic cum cum_in_ass cum_inside dialogue ectobody english english_dialogue english_text female half_naked heterochromia incest male male/female panels papyrus rule_63 sans siblings straight text tongue_out uncensored undertale undertale_(series) veiny_penis
1boy 1boy1girl 1girls 2d after_sex anal anal_sex artist_name blush boner_blossom bottomless closed_eyes color comic cum cum_in_ass cum_inside dialogue ectobody english english_dialogue english_text female half_naked heterochromia incest male male/female panels papyrus rule_63 sans siblings straight text tongue_out uncensored undertale undertale_(series) veiny_penis
2018 2d 3boys alternate_universe animated_skeleton blue_penis blush bodily_fluids bone bottomwear brother brothers clothing color cunnilingus cuntboy cuntboy_sans_balls footwear gay genital_fluids genitals gloves group handwear herm hermaphrodite humanoid incest intersex kerchief licking male male/male male_on_maleherm maleherm multi_genitalia oral orange_tongue papyrus papyrus_(underfell) papyrus_(underswap) penile penis penis_lick precum pussy red_penis sans sans_(underswap) scarf sex sibling simple_background skeleton theyaois_(artist) threesome tongue tongue_out topwear trio uncensored undead underfell underswap undertale undertale_(series) undertale_au yaoi
2018 2d 3boys alternate_universe animated_skeleton blue_penis blush bodily_fluids bone bottomwear brother brothers clothing color cunnilingus cuntboy cuntboy_sans_balls footwear gay genital_fluids genitals gloves group handwear herm hermaphrodite humanoid incest intersex kerchief licking male male/male male_on_maleherm maleherm multi_genitalia oral orange_tongue papyrus papyrus_(underfell) papyrus_(underswap) penile penis penis_lick precum pussy red_penis sans sans_(underswap) scarf sex sibling simple_background skeleton theyaois_(artist) threesome tongue tongue_out topwear trio uncensored undead underfell underswap undertale undertale_(series) undertale_au yaoi
1:1 1:1_aspect_ratio 2022 2boys abosinsin animated_skeleton big_penis blush bodily_fluids bone brother brother/brother brothers can't_see_the_haters cant_see_the_haters dick_on_face duo english_text erect_penis erection gay genital_fluids genitals heart hi_res humanoid incest large_penis male male/male male_out_of_frame orange_penis papyrus penis penis_on_face penis_over_eyes precum sans sibling skeleton text these_aren't_my_glasses throbbing throbbing_penis tongue tongue_out undead undertale undertale_(series) veiny_penis yaoi
1:1 1:1_aspect_ratio 2022 2boys abosinsin animated_skeleton big_penis blush bodily_fluids bone brother brother/brother brothers can't_see_the_haters cant_see_the_haters dick_on_face duo english_text erect_penis erection gay genital_fluids genitals heart hi_res humanoid incest large_penis male male/male male_out_of_frame orange_penis papyrus penis penis_on_face penis_over_eyes precum sans sibling skeleton text these_aren't_my_glasses throbbing throbbing_penis tongue tongue_out undead undertale undertale_(series) veiny_penis yaoi
2023 animated_skeleton bone bonetrouble brother brothers clothing covering covering_mouth erection fellatio footwear gay genitals glowing_genitalia glowing_penis hands_covering_mouth hi_res hoodie humanoid incest licking male male/male male_only onomatopoeia oral orange_penis papyrus penile penis penis_lick red_scarf sans scarf sex sibling simple_background skeleton sound_effects text tongue tongue_out topwear undead undertale undertale_(series) yaoi
2023 animated_skeleton bone bonetrouble brother brothers clothing covering covering_mouth erection fellatio footwear gay genitals glowing_genitalia glowing_penis hands_covering_mouth hi_res hoodie humanoid incest licking male male/male male_only onomatopoeia oral orange_penis papyrus penile penis penis_lick red_scarf sans scarf sex sibling simple_background skeleton sound_effects text tongue tongue_out topwear undead undertale undertale_(series) yaoi
2d ahe_gao alphys anal_sex anthro artist_request asgore_dreemurr color crying female flowey_the_flower forced forced_anal forced_to_watch furry gag gagged goat immobile immobilization immobilized implied_penetration male papyrus rape sans sex stuck tagme tagme_(artist) tentacle tied_up toriel trapped undertale undertale_(series) undyne vines
2d ahe_gao alphys anal_sex anthro artist_request asgore_dreemurr color crying female flowey_the_flower forced forced_anal forced_to_watch furry gag gagged goat immobile immobilization immobilized implied_penetration male papyrus rape sans sex stuck tagme tagme_(artist) tentacle tied_up toriel trapped undertale undertale_(series) undyne vines
blush brother/brother brothers dubious_consent english_text gay incest looking_away male male_only male_pov papyrus pov questionable_consent sans skeleton solo_focus text undertale undertale_(series) unseen_male_face
blush brother/brother brothers dubious_consent english_text gay incest looking_away male male_only male_pov papyrus pov questionable_consent sans skeleton solo_focus text undertale undertale_(series) unseen_male_face
2d 3boys blue_eyes blueberry color dialogue double_penetration english english_dialogue english_text femboy gangbang gay heart-shaped_pupils horny incest male monster monster_boy papyrus penetration penis_in_mouth sans sex sucking tagme text underfell underfell_papyrus underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au
2d 3boys blue_eyes blueberry color dialogue double_penetration english english_dialogue english_text femboy gangbang gay heart-shaped_pupils horny incest male monster monster_boy papyrus penetration penis_in_mouth sans sex sucking tagme text underfell underfell_papyrus underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au
2d 4boys ahe_gao artist_request color cum cum_on_face dialogue english english_dialogue english_text femboy gangbang gay heart-shaped_pupils horny incest male monster monster_boy papyrus papyrus_au penis penis_on_face sans sans_au sex shirt_pull tag tagme_(artist) text underfell_papyrus underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au
2d 4boys ahe_gao artist_request color cum cum_on_face dialogue english english_dialogue english_text femboy gangbang gay heart-shaped_pupils horny incest male monster monster_boy papyrus papyrus_au penis penis_on_face sans sans_au sex shirt_pull tag tagme_(artist) text underfell_papyrus underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au
2boys 2d abosinsin alternate_universe animated_skeleton big_dom_small_sub blush color english_text face_out_of_frame gay incest male male_only moaning monster monster_boy papyrus papyrus_au sans sans_au sex skeleton sweat tagme tears text tongue_out tugging_clothing twitching underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au
2boys 2d abosinsin alternate_universe animated_skeleton big_dom_small_sub blush color english_text face_out_of_frame gay incest male male_only moaning monster monster_boy papyrus papyrus_au sans sans_au sex skeleton sweat tagme tears text tongue_out tugging_clothing twitching underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au
2boys 2d abosinsin alternate_universe animated_skeleton big_dom_small_sub blush color gay gripping_sheets incest male male_only moaning monster monster_boy papyrus papyrus_(underswap) papyrus_au sans sans_(underswap) sans_au sex size_difference skeleton solo_focus sweat tagme tongue_out underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au unseen_male_face
2boys 2d abosinsin alternate_universe animated_skeleton big_dom_small_sub blush color gay gripping_sheets incest male male_only moaning monster monster_boy papyrus papyrus_(underswap) papyrus_au sans sans_(underswap) sans_au sex size_difference skeleton solo_focus sweat tagme tongue_out underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au unseen_male_face
1boy 2d artist_request black_eyes color cum gay green_couch papyrus red_gloves skeleton solo tagme undertale undertale_(series)
1boy 2d artist_request black_eyes color cum gay green_couch papyrus red_gloves skeleton solo tagme undertale undertale_(series)
1:1 1:1_aspect_ratio 3rd_party_watermark anal animated ass ass_grab ass_visible_through_thighs bananapop dildo dildo_in_ass dildo_in_hand dildo_insertion dildo_penetration flipaclip gif grabbing grabbing_ass grabbing_from_behind grabbing_own_ass grabbing_penis hand_on_ass helping helping_hand incest male_penetrated open_ass pants pants_down pants_pulled_down papyrus sans sex_toy skeleton sketch smile undertale undertale_(series)
1:1 1:1_aspect_ratio 3rd_party_watermark anal animated ass ass_grab ass_visible_through_thighs bananapop dildo dildo_in_ass dildo_in_hand dildo_insertion dildo_penetration flipaclip gif grabbing grabbing_ass grabbing_from_behind grabbing_own_ass grabbing_penis hand_on_ass helping helping_hand incest male_penetrated open_ass pants pants_down pants_pulled_down papyrus sans sex_toy skeleton sketch smile undertale undertale_(series)
! aged_up below_view bottomless casual casual_bottomless casual_exposure casual_nudity dialogue english_text exhibitionism exhibitionist exposed exposed_ass exposed_pussy female fight fighting frisk gameplay_mechanics hi_res legwear looking_down male papyrus partially_clothed pussy surprised surprised_expression sweat sweatdrop text thighhighs topwear unaware underboob undertale undertale_(series) zukafu_shimoto
! aged_up below_view bottomless casual casual_bottomless casual_exposure casual_nudity dialogue english_text exhibitionism exhibitionist exposed exposed_ass exposed_pussy female fight fighting frisk gameplay_mechanics hi_res legwear looking_down male papyrus partially_clothed pussy surprised surprised_expression sweat sweatdrop text thighhighs topwear unaware underboob undertale undertale_(series) zukafu_shimoto
3boys abs absurd_res andava balls_in_panties biting_lip biting_own_lip blue_penis boots brown_hair closed_eyes crop_top cute_male femboy frisk gay glowing_penis hand_on_head handjob heart high_resolution huge_cock human kneeling kneeling_oral_position long_penis male male_focus male_only midriff midriff_baring_shirt non-human orange_penis panties papyrus peace_sign penis penis_on_face penis_out sans sissy skeleton slippers sneakers striped_clothing tan_skin tank_top tank_top_lift tankini thigh_highs thighhighs thong thong_panties toby_fox toned toned_belly toned_male toned_stomach trap twink undead undertale undertale_(series) yaoi
3boys abs absurd_res andava balls_in_panties biting_lip biting_own_lip blue_penis boots brown_hair closed_eyes crop_top cute_male femboy frisk gay glowing_penis hand_on_head handjob heart high_resolution huge_cock human kneeling kneeling_oral_position long_penis male male_focus male_only midriff midriff_baring_shirt non-human orange_penis panties papyrus peace_sign penis penis_on_face penis_out sans sissy skeleton slippers sneakers striped_clothing tan_skin tank_top tank_top_lift tankini thigh_highs thighhighs thong thong_panties toby_fox toned toned_belly toned_male toned_stomach trap twink undead undertale undertale_(series) yaoi
2019 2boys animated_skeleton bigger_male blue_blush blue_hoodie blue_jacket blush brothers clothed ectotongue gay glowing hooded_jacket hoodie incest jacket larger_male licking male monster one_eye_closed orange_blush orange_tongue papyrus partially_clothed sans simple_background skeleton undead undertale undertale_(series) yellowscarf_(849741021angela)
2019 2boys animated_skeleton bigger_male blue_blush blue_hoodie blue_jacket blush brothers clothed ectotongue gay glowing hooded_jacket hoodie incest jacket larger_male licking male monster one_eye_closed orange_blush orange_tongue papyrus partially_clothed sans simple_background skeleton undead undertale undertale_(series) yellowscarf_(849741021angela)
alternate_universe bite_mark biting blush brothers dust_papyrus dust_sans dusttale dusttale_sans gay headpat implied_incest incest kneeling male male_only overstimulated overstimulation panting papyrus papyrus_(dusttale) papyrus_au petting presenting sans sans_(dusttale) sans_au shaky sitting soul_sex sympharin symphysins undertale_au
alternate_universe bite_mark biting blush brothers dust_papyrus dust_sans dusttale dusttale_sans gay headpat implied_incest incest kneeling male male_only overstimulated overstimulation panting papyrus papyrus_(dusttale) papyrus_au petting presenting sans sans_(dusttale) sans_au shaky sitting soul_sex sympharin symphysins undertale_au
2boys ? ?!?! alternate_universe animated_skeleton begging blush disembodied_hand disembodied_hands disembodied_head dust_papyrus dust_sans dusttale dusttale_sans face_in_chest fingers_interlocked fingers_intertwined flushed flushed_face flustered gay glove gloves grope holding_hands holding_wrists hood hood_up hooded_jacket hoodie incest interlocked_fingers intertwined_fingers kissing_chest male papyrus papyrus_(dusttale) papyrus_au pleading purple_blush sans sans_(dusttale) sans_au scarf shaking shivering skeleton soul soul_sex soul_steal soul_stealing spoken_heart spoken_musical_note spoken_question_mark surprised sweat sweatdrop sympharin symphysins undertale_au weak_resistance
2boys ? ?!?! alternate_universe animated_skeleton begging blush disembodied_hand disembodied_hands disembodied_head dust_papyrus dust_sans dusttale dusttale_sans face_in_chest fingers_interlocked fingers_intertwined flushed flushed_face flustered gay glove gloves grope holding_hands holding_wrists hood hood_up hooded_jacket hoodie incest interlocked_fingers intertwined_fingers kissing_chest male papyrus papyrus_(dusttale) papyrus_au pleading purple_blush sans sans_(dusttale) sans_au scarf shaking shivering skeleton soul soul_sex soul_steal soul_stealing spoken_heart spoken_musical_note spoken_question_mark surprised sweat sweatdrop sympharin symphysins undertale_au weak_resistance
2022 2boys animated_skeleton bigger_male blowjob blue_blush blue_eyes blue_hoodie blue_jacket blue_penis blue_sans_penis blue_sans_tongue blush brother_penetrating_brother brothers carne_392f carrying carrying_partner clothed dark_background ectopenis ectoplasm fellatio gay glowing grabbing_legs hooded_jacket hoodie incest jacket larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male meta_request monster orange_blush orange_penis papyrus sans sans_glowing_eye shirt_lift shirt_up simple_background sitting skeleton smaller_male smaller_penetrated undead undertale undertale_(series) yaoi
2022 2boys animated_skeleton bigger_male blowjob blue_blush blue_eyes blue_hoodie blue_jacket blue_penis blue_sans_penis blue_sans_tongue blush brother_penetrating_brother brothers carne_392f carrying carrying_partner clothed dark_background ectopenis ectoplasm fellatio gay glowing grabbing_legs hooded_jacket hoodie incest jacket larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male meta_request monster orange_blush orange_penis papyrus sans sans_glowing_eye shirt_lift shirt_up simple_background sitting skeleton smaller_male smaller_penetrated undead undertale undertale_(series) yaoi
2021 abosinsin anger_vein angry animated_skeleton blush brother brother/brother brother_and_brother brothers english_text from_behind grabbing_hand grabbing_hands hand_on_hand hands_grab imminent_sex implied_sex incest male male/male male_only monochrome papyrus sans skeleton sweat sweating text thought_bubble undertale undertale_(series)
2021 abosinsin anger_vein angry animated_skeleton blush brother brother/brother brother_and_brother brothers english_text from_behind grabbing_hand grabbing_hands hand_on_hand hands_grab imminent_sex implied_sex incest male male/male male_only monochrome papyrus sans skeleton sweat sweating text thought_bubble undertale undertale_(series)
2021 abosinsin anger_vein angry animated_skeleton arms_crossed blue_blush blush crossed_arms joke male male_only monochrome papyrus sans skeleton smile smiling smug undertale undertale_(series)
2021 abosinsin anger_vein angry animated_skeleton arms_crossed blue_blush blush crossed_arms joke male male_only monochrome papyrus sans skeleton smile smiling smug undertale undertale_(series)
2boys 2d blushing boots closed_eyes clothed clothed_sex fingers_in_mouth gloves hearts_around_head licking_neck male/male male_only mettaton mettaton_ex monochrome papyrus pizzamagazines robot robot_humanoid skeleton sweatdrop tagme tail thrusting trembling undertale undertale_(series) unknown_artist yaoi
2boys 2d blushing boots closed_eyes clothed clothed_sex fingers_in_mouth gloves hearts_around_head licking_neck male/male male_only mettaton mettaton_ex monochrome papyrus pizzamagazines robot robot_humanoid skeleton sweatdrop tagme tail thrusting trembling undertale undertale_(series) unknown_artist yaoi
2d animated_skeleton boy_rape color cuntboy dialogue ectopussy english english_dialogue english_text flowey_(undertale) flowey_the_flower ganzooky intersex orange_hoodie papyrus papyrus_(underswap) papyrus_au plant rape rape_face restrained talking tentacle text underswap underswap_papyrus undertale undertale_(series) undertale_au vines
2d animated_skeleton boy_rape color cuntboy dialogue ectopussy english english_dialogue english_text flowey_(undertale) flowey_the_flower ganzooky intersex orange_hoodie papyrus papyrus_(underswap) papyrus_au plant rape rape_face restrained talking tentacle text underswap underswap_papyrus undertale undertale_(series) undertale_au vines
2boys 2d english english_text humor male male_only meme papyrus papyrus_(underswap) sans tagme text underswap undertale undertale_(series)
2boys 2d english english_text humor male male_only meme papyrus papyrus_(underswap) sans tagme text underswap undertale undertale_(series)
2d english english_text gay humor incest male male/male male_only meme papyrus papyrus_(underswap) sans text underswap underswap_sans undertale undertale_(series) yaoi
2d english english_text gay humor incest male male/male male_only meme papyrus papyrus_(underswap) sans text underswap underswap_sans undertale undertale_(series) yaoi
2d angry_vein blue_eyes christmas comic_sans dialogue english english_text incest papyrus papyrus_(font) papyrus_(underswap) papyrus_au sans sans_(underswap) sans_au talking text underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au
2d angry_vein blue_eyes christmas comic_sans dialogue english english_text incest papyrus papyrus_(font) papyrus_(underswap) papyrus_au sans sans_(underswap) sans_au talking text underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au
animated_skeleton beetleevil blue_blush blush blush_lines brothers clothed crying english_text evilbeetle heat hugging in_heat incest male male_only monster naked nude papyrus pillow sans skeleton soul speech_bubble text text_bubble thought_bubble undead undertale undertale_(series)
animated_skeleton beetleevil blue_blush blush blush_lines brothers clothed crying english_text evilbeetle heat hugging in_heat incest male male_only monster naked nude papyrus pillow sans skeleton soul speech_bubble text text_bubble thought_bubble undead undertale undertale_(series)
2023 2boys 2d blush blushing_profusely bone closed_eyes dialogue dubious_consent ectoplasm english english_dialogue english_text gay heart heat horny humping in_heat incest male male/male male_only papyrus sans shorts skeleton socks tagme talking text undertale undertale_(series)
2023 2boys 2d blush blushing_profusely bone closed_eyes dialogue dubious_consent ectoplasm english english_dialogue english_text gay heart heat horny humping in_heat incest male male/male male_only papyrus sans shorts skeleton socks tagme talking text undertale undertale_(series)
2boys 2d dialogue english english_dialogue english_text male papyrus sans tagme talking text undertale undertale_(series)
2boys 2d dialogue english english_dialogue english_text male papyrus sans tagme talking text undertale undertale_(series)
1girls 2d annabee_(woebeeme) anthro bee english english_text face_pasties female food funny humor papyrus pasties sans solo spaghetti talking text thighhighs undertale undertale_(series) woebeeme
1girls 2d annabee_(woebeeme) anthro bee english english_text face_pasties female food funny humor papyrus pasties sans solo spaghetti talking text thighhighs undertale undertale_(series) woebeeme
1boy 1boy1girl 1girls 2d blush breasts drooling eating_pussy ectobody ectobreasts ectopussy female female_focus genderswap_(mtf) gripping_sheets heart male naked naked_female nude nude_female papyrus papyrus_(underfell) papyrus_au red_body rule_63 sex skeleton tears text_bubble themimii1 underfell underfell_papyrus undertale undertale_(series) undertale_au unseen_male_face
1boy 1boy1girl 1girls 2d blush breasts drooling eating_pussy ectobody ectobreasts ectopussy female female_focus genderswap_(mtf) gripping_sheets heart male naked naked_female nude nude_female papyrus papyrus_(underfell) papyrus_au red_body rule_63 sex skeleton tears text_bubble themimii1 underfell underfell_papyrus undertale undertale_(series) undertale_au unseen_male_face
2d blue_blush blue_clitoris blue_eyes blue_pussy blush clitoris cum cum_in_pussy cum_inside dialogue ectobody ectopenis ectopussy english_text heart incest leg_lift legs_apart legs_spread orange_penis papyrus penetration sans skeleton soul speech_bubble spread_legs sweat tears text text_bubble themimii1 undertale undertale_(series) unseen_male_face vaginal vaginal_penetration vaginal_sex
2d blue_blush blue_clitoris blue_eyes blue_pussy blush clitoris cum cum_in_pussy cum_inside dialogue ectobody ectopenis ectopussy english_text heart incest leg_lift legs_apart legs_spread orange_penis papyrus penetration sans skeleton soul speech_bubble spread_legs sweat tears text text_bubble themimii1 undertale undertale_(series) unseen_male_face vaginal vaginal_penetration vaginal_sex
absurd_res animated_skeleton anon anonymous anterior_nasal_aperture arm_around_shoulders aroused bite biting_lip biting_own_lip blood blue_clothing bodily_fluids bone clothing comic dialogue dirty_talk english_text funny grey_body grin hi_res holding_zipper_pull_tab humanoid humor long_image looking_at_another male male_only nosebleed onomatopoeia papyrus question_mark roundskull sans self_bite shocked silly skeleton smile sound_effects surprise sweat tall_image teeth text undead undertale undertale_(series) unzipping white_body zipper zipper_pull_tab
absurd_res animated_skeleton anon anonymous anterior_nasal_aperture arm_around_shoulders aroused bite biting_lip biting_own_lip blood blue_clothing bodily_fluids bone clothing comic dialogue dirty_talk english_text funny grey_body grin hi_res holding_zipper_pull_tab humanoid humor long_image looking_at_another male male_only nosebleed onomatopoeia papyrus question_mark roundskull sans self_bite shocked silly skeleton smile sound_effects surprise sweat tall_image teeth text undead undertale undertale_(series) unzipping white_body zipper zipper_pull_tab
2018 2d ass blue_body breasts crossover eastern_and_western_character eye_patch female female_focus heart looking_at_viewer looking_back mario mario_(series) nintendo nipples papyrus red_hair riccardus97 sans skeleton spaghetti thumbs_up undertale undertale_(series) undyne
2018 2d ass blue_body breasts crossover eastern_and_western_character eye_patch female female_focus heart looking_at_viewer looking_back mario mario_(series) nintendo nipples papyrus red_hair riccardus97 sans skeleton spaghetti thumbs_up undertale undertale_(series) undyne
2d 3boys all_fours anal anal_sex black_hair blowjob blue_cum bodily_fluids cum cum_in_ass cum_in_mouth cum_inside cum_on_ass cum_on_face dark_background doggy_style humanoid_robot male mettaton mettaton_ex orange_cum papyrus purple_eyes robot sans undertale undertale_(series)
2d 3boys all_fours anal anal_sex black_hair blowjob blue_cum bodily_fluids cum cum_in_ass cum_in_mouth cum_inside cum_on_ass cum_on_face dark_background doggy_style humanoid_robot male mettaton mettaton_ex orange_cum papyrus purple_eyes robot sans undertale undertale_(series)
2boys 2d blue_blush blue_eyes blue_tongue blush blushing_profusely cum gay incest long_tongue male male/male male_focus male_only orange_penis papyrus sans sans_au scarf skeleton tagme underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au undertale_fanfiction
2boys 2d blue_blush blue_eyes blue_tongue blush blushing_profusely cum gay incest long_tongue male male/male male_focus male_only orange_penis papyrus sans sans_au scarf skeleton tagme underswap underswap_papyrus underswap_sans undertale undertale_(series) undertale_au undertale_fanfiction