1girl, arms_note, ass, black_one-piece_swimsuit, blonde_hair, brown_eyes, competition_swimsuit, cowboy_shot, dark-skinned_female, dark_skin, fang, from_behind, fukai_ryosuke, hair_between_eyes, hair_ornament, highleg, highleg_swimsuit, long_hair, looking_at_viewer, one-piece_swimsuit, open_mouth, sitting, smile, solo, swimming_club_kouhai_(fukai_ryousuke), swimsuit, very_long_hair