katuko deluxe, neo universe (umamusume), umamusume, commentary request, highres, 1girl, alternate costume, alternate hairstyle, animal ears, between legs, black skirt, blonde hair, blue cardigan, blue eyes, blue hair, blush, brown shoes, cardigan, closed mouth, hand between legs, horse ears, horse girl, horse tail, kneehighs, loafers, long sleeves, looking at viewer, ponytail, school uniform, shoes, simple background, sitting, skirt, sleeves past wrists, socks, solo, tail, v arms, wariza, white background, white socks, yellow tail