azuki (azuki azukki), biwa hayahide (umamusume), umamusume, absurdres, highres, 1girl, animal ears, black jacket, black shirt, blush, breasts, ear ornament, garter straps, glasses, grey hair, horse ears, horse girl, horse tail, jacket, large breasts, long hair, long sleeves, looking at viewer, open mouth, purple skirt, red-framed eyewear, semi-rimless eyewear, shirt, simple background, skirt, tail, thighhighs, yellow background