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2010s 2018 2boys 2d 2d_(artwork) animated_skeleton artist_name begging begging_to_cum black_background blue_cum blue_penis blue_tongue blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothed_male clothing comic comic_page comic_panel cum digital_media_(artwork) dominant dominant_male domination drooling duo echoheartx ectopenis ectotongue ejaculation elegantfolly english_text fontcest fully_clothed fully_clothed_male gay gloves handjob hooded_jacket hoodie incest jacket laying_on_back lying_on_back male male/male male_only maledom malesub monochrome monster orange_cum orange_penis orgasm papyrus papyrus_(undertale) papysans partially_colored penis prehensile_penis sans sans_(undertale) seme_papyrus semen_on_face sequence sequential skeleton submissive submissive_male tentacle_penis text tongue top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games yaoi

2010s 2018 2boys 2d 2d_(artwork)animated_skeleton artist_name begging begging_to_cum black_background blue_cum blue_penis blue_tongue blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothed_male clothing comic comic_page comic_panel cum digital_media_(artwork)dominant dominant_male domination drooling duo echoheartx ectopenis ectotongue ejaculation elegantfolly english_text fontcest fully_clothed fully_clothed_male gay gloves handjob hooded_jacket hoodie incest jacket laying_on_back lying_on_back male male/male male_only maledom malesub monochrome monster orange_cum orange_penis orgasm papyrus papyrus_(undertale)papysans partially_colored penis prehensile_penis sans sans_(undertale)seme_papyrus semen_on_face sequence sequential skeleton submissive submissive_male tentacle_penis text tongue top_papyrus uke_sans undead undertale undertale_(series)video_game_character video_games yaoi

2010s 2018 2boys 2d 2d_(artwork) animated_skeleton artist_name begging begging_to_cum black_background blue_cum blue_penis blue_tongue blush bottom_sans brother brother/brother brother_and_brother brothers clothed clothed_male clothing comic comic_page comic_panel cum digital_media_(artwork) dominant dominant_male domination drooling duo echoheartx ectopenis ectotongue ejaculation elegantfolly english_text fontcest fully_clothed fully_clothed_male gay gloves handjob hooded_jacket hoodie incest jacket laying_on_back lying_on_back male male/male male_only maledom malesub monochrome monster orange_cum orange_penis orgasm papyrus papyrus_(undertale) papysans partially_colored penis prehensile_penis sans sans_(undertale) seme_papyrus semen_on_face sequence sequential skeleton submissive submissive_male tentacle_penis text tongue top_papyrus uke_sans undead undertale undertale_(series) video_game_character video_games yaoi

1:1 1:1_aspect_ratio 1boy 2020s 2023 2d 2d_(artwork) animated_skeleton artist_name bathing bathroom bathtub blue_blush blue_cum blue_penis blush bubble_bath comic_sans covering_mouth covering_own_mouth cum cumshot digital_media_(artwork) door ectopenis ejaculation english_text fallen_ghost_angel_(artist) genitals male male_masturbation male_only masturbation monster monster_boy papyrus papyrus_(font) papyrus_(undertale) penile penile_masturbation penis profanity sans sans_(undertale) sequence sequential skeleton solo_focus solo_male speech_bubble surprised text twitter undead undertale undertale_(series) unseen_character video_game_character video_games

1boy 2020s 2023 2d 2d_(artwork) ahegao alternate_version_available animated_skeleton arm_support blue_cum blue_hoodie blue_jacket blue_tongue blush bulge clothed clothed_male cum cum_through_clothes cum_through_clothing cumshot digital_media_(artwork) ectotongue ejaculation erection erection_under_clothes floor fully_clothed fully_clothed_male handsfree_ejaculation handsfree_orgasm hooded_jacket hoodie jacket japanese_text konoha6_(pixiv_id_1724049) large_filesize legs_apart legs_spread male male_ahegao male_only monster monster_boy on_floor orgasm sans sans_(undertale) sequence sequential sitting sitting_on_floor skeleton solo_male spoken_heart submissive sweat tears text tongue tongue_out undead undertale undertale_(series) video_games