ya-ya, sirius symboli (umamusume), umamusume, absurdres, commentary request, highres, 1girl, animal ears, birthday, bow, bowtie, brown hair, closed mouth, ear ornament, hair between eyes, hand on own hip, happy birthday, horse ears, horse girl, horseshoe ornament, long hair, looking at viewer, pleated skirt, purple bow, purple bowtie, purple shirt, red eyes, sailor collar, sailor shirt, school uniform, shirt, simple background, skirt, smile, solo, tracen school uniform, v-shaped eyebrows, white sailor collar, white skirt