1girl, o, beach, black_hair, black_one-piece_swimsuit, blunt_bangs, blush, brown_eyes, competition_school_swimsuit, heterochromia, hime_cut, long_hair, mawaru_(mawaru), nose_blush, one-piece_swimsuit, open_mouth, original, outdoors, rikorisu_(mawaru), school_swimsuit, sky, solo, swimsuit, water, white_sky