1girl, all_fours, ass, ass_focus, bananafish1111, black_shirt, blue_archive, blue_buruma, blue_eyes, blue_hair, blue_jacket, blush, buruma, from_behind, jacket, looking_back, official_alternate_costume, on_floor, shirt, short_hair, short_sleeves, solo, t-shirt, unworn_jacket, yuuka_(blue_archive), yuuka_(track)_(blue_archive)