katuko deluxe, still in love (umamusume), umamusume, highres, 1girl, alternate costume, animal ears, blush, brown cardigan, brown hair, cardigan, closed eyes, drink carton, ear covers, flying sweatdrops, hair ribbon, holding, holding drink carton, horse ears, horse girl, horse tail, juice box, juice carton, long hair, multicolored hair, red ribbon, ribbon, school uniform, shirt, simple background, solo, streaked hair, tail, veil, white background, white hair, white shirt, white streaks, white veil