1girl, black one-piece swimsuit, brown eyes, closed mouth, clothes lift, feet out of frame, knee up, long sleeves, looking at viewer, lying, old school swimsuit, on back, one-piece swimsuit, original, purple hair, sailor collar, school swimsuit, school uniform, serafuku, shadow, shibacha, shirt, shirt lift, simple background, sleeves past wrists, solo, striped, striped thighhighs, swimsuit, swimsuit under clothes, thighhighs, tongue, tongue out, two side up, white background, white sailor collar, white shirt