1girl, ass, black_shirt, blue_archive, blue_buruma, blue_eyes, blush, buruma, from_behind, gym_uniform, halo, kuavera, long_hair, looking_at_viewer, looking_back, official_alternate_costume, open_mouth, parted_bangs, ponytail, purple_hair, shirt, short_sleeves, simple_background, solo, thigh_gap, thighs, white_background, yuuka_(blue_archive), yuuka_(track)_(blue_archive)