okimoto, agnes tachyon (umamusume), umamusume, 1girl, aiguillette, animal ears, black necktie, black shirt, brown hair, cape, chemical structure, collared shirt, ear covers, ears through headwear, epaulettes, gloves, hair between eyes, hat, horse ears, horse girl, horseshoe, jacket, long sleeves, looking at viewer, medium hair, military hat, military uniform, necktie, parted lips, peaked cap, red eyes, shirt, simple background, smile, solo, upper body, white background, white gloves, white jacket