1girl, black_hair, blue_one-piece_swimsuit, blue_sky, breasts, cloud, competition_swimsuit, cowboy_shot, green_eyes, indoors, low_twintails, one-piece_swimsuit, original, parted_lips, pennant, short_hair, sky, small_breasts, solo, standing, streamers, string_of_flags, swimsuit, takafumi, twintails