1girl, air groove (umamusume), alternate costume, animal ears, arms behind head, arms up, blue eyes, breasts, brown hair, closed mouth, dolphin shorts, full body, horse ears, horse girl, horse tail, kento (kentdrawing), long sleeves, looking at viewer, medium breasts, medium hair, midriff peek, parted lips, purple shorts, shirt, shoes, shorts, simple background, sneakers, solo, standing, stretching, tail, umamusume, white background, white footwear