Rule 34 Dev - 1boy 2015 anthro anus asriel_dreemurr asriel_dreemurr_(god_form) ass balls blush boss_monster caprine clothing dark_skin erection fur goat group hair hi_res human imminent_sex keigai legwear looking_at_viewer male male_focus male_only mammal nude open_mouth penis simple_background tattoo text tongue undertale video_games yaoi|2135957400