hoshino reiji, symboli rudolf (umamusume), umamusume, commentary request, highres, 1girl, animal ears, arms up, blush, border, breasts, brown hair, brown tail, crop top, heart arms, horse ears, horse girl, horse tail, layered skirt, long hair, looking at viewer, loose socks, midriff, official alternate costume, one eye closed, open mouth, outside border, pink background, pink shirt, pink shoes, pink skirt, pink socks, purple eyes, shirt, shoes, simple background, skirt, smile, socks, solo, standing, standing on one leg, tail, white border, white hair, white streaks