2girls =_= animal_ears bare_shoulders barefoot blue_one-piece_swimsuit bob_cut closed_eyes collarbone competition_school_swimsuit ear_covers grey_hair hair_ornament hairband hairclip highres horse_ears horse_girl horse_tail multiple_girls nishino_flower_(umamusume) one-piece_swimsuit purple_hair purple_hairband school_swimsuit seiun_sky_(umamusume) short_hair sitting squatting swimsuit tail tracen_swimsuit umamusume x_hair_ornament yonedatomo_mizu