mizuki maya, satono diamond (umamusume), umamusume, commentary, 1girl, :d, animal ears, black thighhighs, brown hair, colored shadow, dated, double-parted bangs, full body, green jacket, green skirt, grey background, horse ears, horse girl, horse tail, jacket, long hair, long sleeves, open clothes, open jacket, open mouth, orange eyes, shadow, signature, simple background, skirt, sleeves past fingers, sleeves past wrists, smile, solo, tail, teeth, thighhighs, upper teeth only, very long hair