1girl, animal_ears, arm_up, armpits, blue_one-piece_swimsuit, breasts, closed_eyes, collarbone, covered_navel, hand_on_own_forehead, long_hair, mayano_top_gun_(umamusume), motsutoko, one-piece_swimsuit, open_mouth, orange_hair, pool, school_swimsuit, skin_tight, sleeveless, small_breasts, solo, swimming, swimsuit, thighs, tracen_swimsuit, umamusume, wading, water