agnes tachyon (umamusume), umamusume, highres, 1girl, ahoge, animal ears, arata savage, arm up, black pantyhose, box, brown hair, chemical structure, ear ornament, earrings, finger heart, grey sweater, hair between eyes, hand up, horse ears, horse girl, in box, in container, jersey maid, jewelry, long sleeves, looking at viewer, maid, medium hair, no panties, open mouth, pantyhose, pink shoes, red eyes, shoes, simple background, single earring, sleeves past wrists, smile, sneakers, solo, speech bubble, sweater, teeth, thighband pantyhose, unconventional maid, upper teeth only, white background