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<3 1boy 1boy1girl 1girl 2d 2d_(artwork) anthro anthro_on_anthro anthro_only anthro_penetrated anthro_penetrating anthro_penetrating_anthro areola areolae asgore_dreemurr asgoriel ass balls_deep bedding big_breasts blush bodily_fluids boss_monster bouncing_breasts bovid breasts caprine closed_eyes completely_nude completely_nude_female completely_nude_male couple digital_media_(artwork) dilf duo enigi09 female_anthro female_focus female_penetrated first_person_view floppy_ears from_front_position fur furry furry_female furry_male furry_only genital_fluids genitals goat goat_ears goat_girl goat_horns grabbing_sheets heart hetero high_res horns husband husband_and_wife lying male male/female male_anthro male_penetrating male_penetrating_female male_pov mammal mature mature_anthro mature_female mature_male milf missionary_position monster monster_boy monster_girl motion_lines nipples nude nude_anthro nude_female nude_male on_back open_mouth partial_male penetrating_pov penetration penetration_from_front penetrator_pov penis pillow pov pussy pussy_juice seme_asgore sex sex_from_front sheet_grab solo_focus stomach_bulge straight sweat third-party_source top_asgore toriel twitter undertale undertale_(series) unseen_male_face vaginal_penetration video_game_character video_games white_body white_fur wife
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2020s 2021 2boys 2d 2d_(artwork) against_the_wall against_wall alley anal animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_penetrating bigger_penetrating_smaller biting_clothes biting_shirt blue_blush blush bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing digital_media_(artwork) duo ectopenis fontcest from_front_position goma_dango_555 hooded_jacket hoodie incest intraspecies jacket kabedon larger_penetrating larger_penetrating_smaller male male_only male_penetrating monster monster_boy orange_blush pants_around_one_leg pants_down papyrus papyrus_(undertale) papysans partially_clothed penetration penetration_from_front penis pinned pinned_to_wall pixiv_id_49095896 sans sans_(undertale) seme_papyrus sex sex_from_front shoes sibling_incest siblings skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom stealth_sex toony top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games wall wall_(structure) yaoi
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2020s 2021 2boys 2d 2d_(artwork) anal animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_penetrating bigger_penetrating_smaller blue_blush blue_tongue blush bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothes_lift crying digital_media_(artwork) duo ectopenis ectoplasm ectotongue fontcest from_front_position goma_dango_555 incest intraspecies larger_penetrating larger_penetrating_smaller making_out male male_only male_penetrating mastery_position monster monster_boy orange_blush orange_penis orange_tongue papyrus papyrus_(undertale) papysans partially_clothed partially_colored penetration penetration_from_front penis pixiv_id_49095896 riding riding_penis sans sans_(undertale) seme_papyrus sex sex_from_front shirt_lift sibling_incest siblings simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks socks_on sweat tears tongue tongue_out toony top_papyrus uke_sans undead undertale undertale_(series) video_games yaoi
2020s 2021 2boys 2d 2d_(artwork) anal animated_skeleton big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_penetrating bigger_penetrating_smaller blue_blush blue_tongue blush bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothes_lift crying digital_media_(artwork) duo ectopenis ectoplasm ectotongue fontcest from_front_position goma_dango_555 incest intraspecies larger_penetrating larger_penetrating_smaller making_out male male_only male_penetrating mastery_position monster monster_boy orange_blush orange_penis orange_tongue papyrus papyrus_(undertale) papysans partially_clothed partially_colored penetration penetration_from_front penis pixiv_id_49095896 riding riding_penis sans sans_(undertale) seme_papyrus sex sex_from_front shirt_lift sibling_incest siblings simple_background skeleton small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks socks_on sweat tears tongue tongue_out toony top_papyrus uke_sans undead undertale undertale_(series) video_games yaoi
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1boy 1boy1girl 1girl 2d 2d_(artwork) anthro anthro_only anthro_penetrated anthro_penetrating anthro_penetrating_anthro arm_hair asgore_dreemurr asgoriel back_hair beard blonde_hair body_hair boss_monster bovid caprine chest_hair closed_eyes cornymember couple dialogue duo facial_hair female_anthro from_front_position fur furry furry_female furry_male furry_only goat goat_ears goat_horns hair happy_trail high_res horn horns intimate lying male male/female male_anthro mammal mature_female mature_male missionary_position monster nude nude_female nude_male on_back overweight overweight_anthro overweight_male penetration penetration_from_front romantic romantic_couple sex sex_from_front side_view simple_background speech_bubble straight tail tail_tuft text text_bubble toriel undertale undertale_(series) video_game_character video_games white_body white_fur
1boy 1boy1girl 1girl 2d 2d_(artwork) anthro anthro_only anthro_penetrated anthro_penetrating anthro_penetrating_anthro arm_hair asgore_dreemurr asgoriel back_hair beard blonde_hair body_hair boss_monster bovid caprine chest_hair closed_eyes cornymember couple dialogue duo facial_hair female_anthro from_front_position fur furry furry_female furry_male furry_only goat goat_ears goat_horns hair happy_trail high_res horn horns intimate lying male male/female male_anthro mammal mature_female mature_male missionary_position monster nude nude_female nude_male on_back overweight overweight_anthro overweight_male penetration penetration_from_front romantic romantic_couple sex sex_from_front side_view simple_background speech_bubble straight tail tail_tuft text text_bubble toriel undertale undertale_(series) video_game_character video_games white_body white_fur
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2020s 2023 2boys animated_skeleton arm_support big_dom big_dom_small_sub bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_hoodie blue_jacket boots bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers couch couch_sex duo ectopenis ectoplasm ectopussy fontcest from_front_position furniture gloves green_couch hooded_jacket hoodie humanoid incest indoors intraspecies jacket japanese_text larger_male larger_penetrating legs_up male male/male male_only male_penetrating missionary_position monster monster_boy on_couch on_sofa papyrus papyrus_(undertale) papysans partially_clothed partially_clothed_male penetration penetration_from_front penis pussy red_boots red_gloves red_penis s2ames2 sans sans_(undertale) seme_papyrus sex sex_from_front sex_on_couch sex_on_sofa sibling_incest siblings skeleton slippers small_sub small_sub_big_dom smaller_penetrated smaller_sub smaller_sub_bigger_dom socks sofa spread_legs text top_papyrus uke_sans undead undertale undertale_(series) unseen_male_face white_gloves white_socks yaoi