akagi koku, copano rickey (umamusume), umamusume, commentary, highres, 1girl, ahoge, animal ears, back bow, blush, bow, bowtie, closed mouth, double bun, frilled skirt, frills, full body, greyscale, hair bun, hands on own knees, horse ears, horse girl, horse tail, leaning forward, long hair, looking at viewer, monochrome, multicolored hair, pleated skirt, sailor collar, school uniform, shirt, shoes, short sleeves, simple background, skirt, solo, standing, tail, thighhighs, tracen school uniform, two-tone hair, zettai ryouiki