1girl, acaa, ass, black_hair, black_shirt, blue_archive, blue_buruma, blush, buruma, from_behind, grey_eyes, leaning_forward, long_hair, looking_to_the_side, open_mouth, ponytail, shirt, short_sleeves, sidelocks, sideways_glance, simple_background, solo, standing, sticker_on_face, sweat, white_background, yuuka_(blue_archive), yuuka_(track)_(blue_archive)