shimano natsume, hand on thigh, 1girl, ass, ball, black-framed eyewear, black eyes, black hair, black socks, body blush, bookshelf, braid, brown eyes, brown hair, buruma, female focus, from behind, glasses, gym storeroom, gym uniform, indoors, kneehighs, kneeling, leaning forward, long hair, looking at viewer, looking back, mat, semi-rimless eyewear, shirt, shoes, short sleeves, sitting, smile, sneakers, socks, solo, spread legs, twin braids, under-rim eyewear, vaulting horse, volleyball, volleyball (object), wariza