1girl, animal_ears, arm_at_side, bare_arms, bare_shoulders, bikini, black_bikini, black_hair, blue_eyes, bob_cut, breasts, caustics, choker, cleavage, day, eishin_flash_(umamusume), frilled_bikini, frills, hair_between_eyes, hand_on_own_chest, horse_ears, horse_girl, horse_tail, looking_at_viewer, medium_breasts, multi-strapped_bikini, navel, outdoors, roppaku, short_hair, solo, swept_bangs, swimsuit, tail, thigh_strap, twitter_username, umamusume, wading, water