seiun sky (umamusume), umamusume, commentary request, highres, 1girl, animal ears, blue eyes, blush stickers, bow, bowtie, collarbone, ear covers, finger frame, flower, green hair, hair flower, hair ornament, hands up, horse ears, horse girl, long sleeves, looking at viewer, makarun sky, portrait, purple serafuku, purple shirt, school uniform, serafuku, shirt, short hair, simple background, single ear cover, smile, solo, sunflower, sunflower hair ornament, tongue, tracen school uniform, white bow, white bowtie, yellow background