1girl, d, ahoge, blue_one-piece_swimsuit, brown_eyes, casual_one-piece_swimsuit, closed_eyes, hair_between_eyes, long_hair, long_sleeves, macaron_background, one-piece_swimsuit, onii-chan_wa_oshimai!, open_mouth, oyama_mahiro, pillarboxed, pink_hair, school_swimsuit, school_uniform, sleeves_past_wrists, smile, solo, swimsuit, twirl, w, zattauma