zen, tsukishima ruriko, shizuku (game), 1girl, ball, blue bra, blue eyes, blue hair, blue panties, blush, bra, breasts, cleavage, female focus, from above, gym storeroom, hip focus, indoors, kneeling, legs, lingerie, matching hair/eyes, multiple balls, panties, parted lips, school, short hair, sitting, socks, solo, thighs, underwear, underwear only, volleyball, volleyball (object), white socks, yokozuwari