1girl, arm behind head, ass, ass visible through thighs, black one-piece swimsuit, black thighhighs, blush, bob cut, breasts, cameltoe, collarbone, covered nipples, covering navel, groin, hagane orchestra, hair ornament, hairclip, long sleeves, looking at viewer, lying, on back, one-piece swimsuit, poru, purple eyes, purple hair, shiny skin, short hair, small breasts, solo, swimsuit, swimsuit under clothes, thighhighs, thighs, yuzuki yukari