1028121

2020s 2023 2boys 2d 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 commission completely_nude completely_nude_male crying digital_media_(artwork) dominant dominant_male duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils heart_eyes 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 thrusting tongue top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games yaoi

2020s 2023 2boys 2d 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 commission completely_nude completely_nude_male crying digital_media_(artwork)dominant dominant_male duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils heart_eyes 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 thrusting tongue top_papyrus uke_sans undead undertale undertale_(series)video_game_character video_games yaoi

2020s 2023 2boys 2d 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 commission completely_nude completely_nude_male crying digital_media_(artwork) dominant dominant_male duo ectopenis ectoplasm ectotongue english_text evilbeetle fontcest from_front_position genitals grabbing_leg heart-shaped_pupils heart_eyes 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 thrusting tongue top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games yaoi

!!! 2010s 2018 2boys 2d 2d_(artwork) after_deepthroat after_fellatio after_oral animated_skeleton bigger_male blue_blush blue_tongue blush bottom_sans brothers clothed clothed_male covering_own_mouth cum deepthroat digital_media_(artwork) duo ectopenis ectotongue edit edited english_text fellatio fontcest hand_on_another's_head hand_on_head imminent_fellatio imminent_oral incest intraspecies larger_male licking_penis long_image male male/male male_moaning male_only moaning monster monster_boy multiple_images oral orange_blush orange_penis papyrus papyrus_(undertale) papysans penis sans sans_(undertale) seme_papyrus sequence sequential sequential_art sex sibling_incest siblings simple_background skeleton solo_focus spoken_exclamation_mark sucking_penis talking talking_to_another talking_to_partner tall_image text theyaois third-party_edit tongue top_papyrus trembling twitter uke_sans undead undertale undertale_(series) video_game_character video_games white_background yaoi

2010s 2018 2boys 2d 2d_(artwork) after_deepthroat after_fellatio after_oral animated_skeleton blue_blush blue_tongue blush bottom_sans brothers clothed clothed_male cum cum_in_mouth cum_on_tongue digital_media_(artwork) duo ectotongue english_text fontcest gay hand_on_another's_face hand_on_cheek hand_on_face hands_on_another's_face hands_on_cheeks hands_on_face incest intraspecies male male/male male_only monster monster_boy orange_blush papyrus papyrus_(undertale) papysans sans sans_(undertale) seme_papyrus sequence sequential sequential_art sibling_incest siblings simple_background skeleton solo_focus talking_to_another talking_to_partner text theyaois tongue tongue_out top_papyrus twitter uke_sans undead undertale undertale_(series) video_game_character video_games visible_breath white_background yaoi