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2010s 2017 2boys 2d anal anal_penetration anal_sex animated_skeleton arm_support big_dom bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blanket blue_hoodie blue_jacket blush bottom_sans bottomless closed_eyes clothed clothing digital_media_(artwork)domimant domimant_male duo ectoplasm elemental_creature elemental_humanoid eyewear fire_elemental from_behind_position from_front_position glasses grillby grillsans hooded_jacket hoodie humanoid jacket kissing larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male maledom malesub mastery_position monster monster_boy motion_lines multiple_views nude nude_male oaytacnoom orange_body orange_penis penetration penis rectangular_eyewear rectangular_glasses sans sans_(undertale)seme_grillby sex simple_background size_difference skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom straddling submissive submissive_male sweat top_grillby topwear uke_sans undead undertale undertale_(series)video_games visible_breath white_background yaoi

2010s 2017 2boys 2d anal anal_penetration anal_sex animated_skeleton arm_support big_dom bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blanket blue_hoodie blue_jacket blush bottom_sans bottomless closed_eyes clothed clothing digital_media_(artwork) domimant domimant_male duo ectoplasm elemental_creature elemental_humanoid eyewear fire_elemental from_behind_position from_front_position glasses grillby grillsans hooded_jacket hoodie humanoid jacket kissing larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male maledom malesub mastery_position monster monster_boy motion_lines multiple_views nude nude_male oaytacnoom orange_body orange_penis penetration penis rectangular_eyewear rectangular_glasses sans sans_(undertale) seme_grillby sex simple_background size_difference skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom straddling submissive submissive_male sweat top_grillby topwear uke_sans undead undertale undertale_(series) video_games visible_breath white_background yaoi

2010s 2017 2boys 2d anal anal_penetration anal_sex animated_skeleton big_dom bigger_dom bigger_dom_smaller_sub bigger_male bigger_penetrating bigger_penetrating_smaller blue_belly blue_blush blue_body blue_hoodie blue_jacket blue_penis blush bodily_fluids bottom_sans bottomless chubby chubby_male claws closed_eyes clothed clothing digital_media_(artwork) domimant domimant_male duo ectobelly ectobody ectopenis elemental_creature elemental_humanoid fire_elemental fluids from_behind_position grillby grillsans hooded_jacket hoodie humanoid jacket larger_male larger_penetrating larger_penetrating_smaller male male/male male_only male_penetrated male_penetrating male_penetrating_male maledom malesub monster monster_boy nude nude_male orange_body orange_penis partially_clothed penetration penetration_from_behind penis precum sans sans_(undertale) seme_grillby sex sex_from_behind simple_background size_difference skeleton small_sub small_sub_big_dom smaller_male smaller_penetrated smaller_sub smaller_sub_bigger_dom solo_focus submissive submissive_male sweat top_grillby topwear uke_sans undead undertale undertale_(series) unseen_male_face video_games weirddworms white_background yaoi

1:1 1:1_aspect_ratio 1boy 2020s 2023 2d 2d_(artwork) alternate_version_available animated_skeleton artist_name artist_signature bed bed_sheet bedroom black_and_white black_background blue_blush blush bottomwear bulge clothed clothing comic_sans digital_media_(artwork) drooling english_text fallen_ghost_angel_(artist) fully_clothed gloves glowing glowing_genitalia hooded_jacket hoodie indoors jacket looking_down male male_focus male_masturbation male_only masturbation monochrome monster monster_boy off_shoulder on_bed partially_colored penis_bulge pixel_(artwork) pixel_art sans sans_(undertale) skeleton solo_male soul soul_sex text topwear twitter undead undertale undertale_(series) video_game_character video_games visible_breath white_gloves