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2020s 2023 2boys 2d 2d_(artwork) anal animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing commision commision_art completely_nude completely_nude_male crying dazed digital_media_(artwork) dominant dominant_male duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest from_front_position genitals grabbing_leg incest intraspecies male male/male male_only maledom malesub monster monster_boy nude nude_male orange_blush orange_penis overstimulation papyrus papyrus_(undertale) papysans penetration penis sans sans_(undertale) seme_papyrus sequence sequential sequential_art sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears text text_bubble thrusting tongue top_papyrus trembling trembling_legs twitter uke_sans undead undertale undertale_(series) video_game_character video_games yaoi

2020s 2023 2boys 2d 2d_(artwork)anal animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing commision commision_art completely_nude completely_nude_male crying dazed digital_media_(artwork)dominant dominant_male duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest from_front_position genitals grabbing_leg incest intraspecies male male/male male_only maledom malesub monster monster_boy nude nude_male orange_blush orange_penis overstimulation papyrus papyrus_(undertale)papysans penetration penis sans sans_(undertale)seme_papyrus sequence sequential sequential_art sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears text text_bubble thrusting tongue top_papyrus trembling trembling_legs twitter uke_sans undead undertale undertale_(series)video_game_character video_games yaoi

2020s 2023 2boys 2d 2d_(artwork) anal animated_skeleton artist_name beetleevil blue_blush blue_tongue blush blushing_male bottom_sans brother brother/brother brother_and_brother brother_penetrating_brother brothers clothed clothing commision commision_art completely_nude completely_nude_male crying dazed digital_media_(artwork) dominant dominant_male duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest from_front_position genitals grabbing_leg incest intraspecies male male/male male_only maledom malesub monster monster_boy nude nude_male orange_blush orange_penis overstimulation papyrus papyrus_(undertale) papysans penetration penis sans sans_(undertale) seme_papyrus sequence sequential sequential_art sex sibling_incest siblings simple_background skeleton sketch speech_bubble submissive submissive_male tears text text_bubble thrusting tongue top_papyrus trembling trembling_legs twitter uke_sans undead undertale undertale_(series) video_game_character video_games yaoi

antenna ass blush breasts brown_hair cum dazed demon_girl erection female_only femdom femsub frantheflan friday_night_funkin futadom futanari futanari_with_female girlfriend_(friday_night_funkin) happy_trance hypnotic_accessory long_hair masturbation nipples nude nun penis pink_hair pink_skin red_eyes red_hair sarvente_(dokki.doodlez) simple_background smile standing tech_control white_eyes yuri

2020 2020s 2d 2d_(artwork) after_sex animated_skeleton blue_heart blush bodily_fluids bottom_sans bottomless brothers cum dazed digital_media_(artwork) fluid fluids food frisk frisk_(undertale) gloves heart heki_(miss60250) hot_dog lying_down lying_on_back lying_on_table male male_focus monster monster_boy on_back out_of_frame papyrus papyrus_(undertale) reaching red_gloves saliva sans sans_(undertale) sausage shirt_up siblings skeleton solo_focus submissive tears third-party_source uke_sans undead undertale undertale_(series) unseen_character video_game_character video_games wasted