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2020s 2022 2boys 2d 2d_(artwork) anal animated_skeleton artist_name artist_watermark begging_for_more blue_blush blush blush_lines blushing_male bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers carrying_another carrying_partner carrying_position clothed clothing comic_sans cussing digital_media_(artwork) dominant dominant_male duo ectoplasm empath__life english_text fontcest from_front_position glowing glowing_genitalia grey_background incest intraspecies male male/male male_only maledom malesub moaning monster monster_boy orange_blush papyrus papyrus_(font) papyrus_(undertale) papysans partially_colored penetration penetration_from_front profanity sans sans_(undertale) seme_papyrus sex sex_from_front sibling_incest siblings simple_background skeleton solid_color_background stand_and_carry_position standing submissive submissive_male suspended_congress swearing sweat tel_a_friend text top_papyrus twitter uke_sans undead undertale undertale_(series) video_game_character video_games watermark yaoi

2020s 2022 2boys 2d 2d_(artwork)anal animated_skeleton artist_name artist_watermark begging_for_more blue_blush blush blush_lines blushing_male bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers carrying_another carrying_partner carrying_position clothed clothing comic_sans cussing digital_media_(artwork)dominant dominant_male duo ectoplasm empath__life english_text fontcest from_front_position glowing glowing_genitalia grey_background incest intraspecies male male/male male_only maledom malesub moaning monster monster_boy orange_blush papyrus papyrus_(font)papyrus_(undertale)papysans partially_colored penetration penetration_from_front profanity sans sans_(undertale)seme_papyrus sex sex_from_front sibling_incest siblings simple_background skeleton solid_color_background stand_and_carry_position standing submissive submissive_male suspended_congress swearing sweat tel_a_friend text top_papyrus twitter uke_sans undead undertale undertale_(series)video_game_character video_games watermark yaoi

2020s 2022 2boys 2d 2d_(artwork) anal animated_skeleton artist_name artist_watermark begging_for_more blue_blush blush blush_lines blushing_male bottom_sans bottomless bottomless_male brother brother/brother brother_and_brother brother_penetrating_brother brothers carrying_another carrying_partner carrying_position clothed clothing comic_sans cussing digital_media_(artwork) dominant dominant_male duo ectoplasm empath__life english_text fontcest from_front_position glowing glowing_genitalia grey_background incest intraspecies male male/male male_only maledom malesub moaning monster monster_boy orange_blush papyrus papyrus_(font) papyrus_(undertale) papysans partially_colored penetration penetration_from_front profanity sans sans_(undertale) seme_papyrus sex sex_from_front sibling_incest siblings simple_background skeleton solid_color_background stand_and_carry_position standing submissive submissive_male suspended_congress swearing sweat tel_a_friend text top_papyrus twitter uke_sans undead undertale undertale_(series) video_game_character video_games watermark yaoi

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

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