matty (matsutomo), grass wonder (racehorse), grass wonder (umamusume), real life, umamusume, highres, 1girl, animal ears, armband, black pantyhose, blue eyes, blue jacket, blue sky, blush, bow, brown hair, cloud, dress, ear bow, ear ornament, ear ribbon, holding, horse ears, horse girl, horse tail, jacket, long hair, long sleeves, looking at viewer, multicolored hair, one eye closed, open mouth, outdoors, pantyhose, red armband, sailor collar, sky, smile, solo, stuffed animal, stuffed horse, stuffed toy, tail, white dress, white hair