akari 0313, wonder acute (umamusume), umamusume, highres, 1girl, alternate costume, animal ears, black bow, black pants, black vest, blue eyes, blush, bow, breasts, butler, closed mouth, collared shirt, ear bow, ear covers, grey hair, hair between eyes, hair ornament, holding, horse ears, horse girl, horse tail, long hair, long sleeves, open mouth, pants, shirt, single ear cover, smile, tail, vest, white shirt