1girl, ass, ball, black_eyes, black_hair, blue_buruma, buruma, cowboy_shot, crotch_seam, from_behind, gym_shirt, gym_uniform, hair_tie, holding, holding_ball, looking_at_viewer, looking_back, maburu_(lojyq1eur3e8bit), medium_hair, open_mouth, original, shirt, short_sleeves, side_ponytail, simple_background, solo, t-shirt, volleyball, volleyball_(object), white_background, white_shirt