believe (umamusume), umamusume, commentary request, highres, 1girl, 2026, ahoge, alternate costume, animal ears, black hair, blue kimono, ear covers, floral print, flower, furisode, hair flower, hair ornament, happy new year, horse ears, horse girl, hoshikokamiji, japanese clothes, kagami mochi, kimono, looking at viewer, multicolored hair, new year, pink eyes, short hair, single ear cover, smile, solo, streaked hair, upper body, white hair, white streaks