retsumaru, arena (company), original, highres, 1girl, artist name, blue hair, blush, breasts, brown hair, closed mouth, colored inner hair, competition school swimsuit, cowboy shot, dated, dot mouth, grey eyes, looking down, looking to the side, multicolored hair, one-piece swimsuit, own hands together, school swimsuit, short hair, signature, simple background, small breasts, solo, swimsuit, white background