Rule 34 Dev - 1girl animal_ears bare_arms breasts grey_hair highres hishi_miracle_(umamusume) horse_ears horse_girl horse_tail indoors kashinoki_(koaaski) kickboard letterboxed one-piece_swimsuit pool purple_one-piece_swimsuit school_swimsuit shadow short_hair small_breasts solo swimsuit tail umamusume water x_x|19352275371