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1boy 1cuntboy 2020s 2021 2d 2d_(artwork) abosinsin animated_skeleton ass_spanking bad_id bad_twitter_id blue_blush blue_eyes blue_hoodie blue_jacket blue_tongue blush bodily_fluids bottom_sans bottomless brother brother/brother brother_and_brother brothers butt_spanking cuntboy cuntboy_focus cuntboysub digital_media_(artwork) dominant dominant_male duo ectoplasm ectopussy english_text fluids fontcest gloves grabbing_sheets gripping_sheets hand heart-shaped_pupils heart_eyes hooded_jacket hoodie inactive_account incest jacket kneeling looking_back male maledom monster papyrus papyrus_(undertale) papysans pink_socks punishment pussy red_gloves sans sans_(undertale) seme_papyrus skeleton socks solo_focus spank_marks spanking spanking_ass spanking_butt submissive submissive_cuntboy sweat text top_papyrus twitter_username uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_game_character video_games visible_breath white_background yaoi

1boy 1cuntboy 2020s 2021 2d 2d_(artwork)abosinsin animated_skeleton ass_spanking bad_id bad_twitter_id blue_blush blue_eyes blue_hoodie blue_jacket blue_tongue blush bodily_fluids bottom_sans bottomless brother brother/brother brother_and_brother brothers butt_spanking cuntboy cuntboy_focus cuntboysub digital_media_(artwork)dominant dominant_male duo ectoplasm ectopussy english_text fluids fontcest gloves grabbing_sheets gripping_sheets hand heart-shaped_pupils heart_eyes hooded_jacket hoodie inactive_account incest jacket kneeling looking_back male maledom monster papyrus papyrus_(undertale)papysans pink_socks punishment pussy red_gloves sans sans_(undertale)seme_papyrus skeleton socks solo_focus spank_marks spanking spanking_ass spanking_butt submissive submissive_cuntboy sweat text top_papyrus twitter_username uke_sans undead undertale undertale_(series)unseen_male unseen_male_face video_game_character video_games visible_breath white_background yaoi

1boy 1cuntboy 2020s 2021 2d 2d_(artwork) abosinsin animated_skeleton ass_spanking bad_id bad_twitter_id blue_blush blue_eyes blue_hoodie blue_jacket blue_tongue blush bodily_fluids bottom_sans bottomless brother brother/brother brother_and_brother brothers butt_spanking cuntboy cuntboy_focus cuntboysub digital_media_(artwork) dominant dominant_male duo ectoplasm ectopussy english_text fluids fontcest gloves grabbing_sheets gripping_sheets hand heart-shaped_pupils heart_eyes hooded_jacket hoodie inactive_account incest jacket kneeling looking_back male maledom monster papyrus papyrus_(undertale) papysans pink_socks punishment pussy red_gloves sans sans_(undertale) seme_papyrus skeleton socks solo_focus spank_marks spanking spanking_ass spanking_butt submissive submissive_cuntboy sweat text top_papyrus twitter_username uke_sans undead undertale undertale_(series) unseen_male unseen_male_face video_game_character video_games visible_breath white_background yaoi

2017 4_legs april_fools black_and_white blush crying drooling english_text first_porn_of_character grabbing_sheets gripping_sheets heart-shaped_pupils heart_eyes jerry_(undertale) looking_away monster nczhhdyb penetration sex text trembling undertale undertale_(series) unknown_species white_background

1boy 2020s 2021 animated_skeleton black_and_white blush_lines bottom_sans bottomless english_text grabbing_sheets gripping_sheets hooded_jacket hoodie jacket looking_down male male_only monster pants_around_one_leg pixiv_id_3871107 sans sans_(undertale) skeleton sketch solo solo_male submissive sweat tears text uke_sans undead undertale undertale_(series) white_background