stay gold (umamusume), umamusume, commentary, highres, symbol-only commentary, 1girl, animal ears, between legs, bottomless, brown hair, covering crotch, covering privates, flat chest, hair between eyes, horse ears, horse girl, horse tail, japanese clothes, kimono, long hair, looking at viewer, lying, multicolored hair, no panties, on back, red kimono, smile, solo, streaked hair, tail, tail between legs, tail censor, urururike, yellow eyes, yukata