Rule 34 Dev - 1girl armpits arms_up black_hair breasts brown_eyes competition_swimsuit cowboy_shot eyebrows_hidden_by_hair fitness_boxing highleg highleg_one-piece_swimsuit highres long_hair looking_at_viewer medium_breasts one-piece_swimsuit open_mouth outside_border serizawa_(serizawaroom) solo swimsuit thighs|13239794529