amo (pixiv24460428), agnes tachyon (umamusume), umamusume, highres, 1girl, ahoge, animal ears, black shirt, chemical structure, coat, collared shirt, ear ornament, earrings, furrowed brow, grey background, hair between eyes, hands up, holding, holding test tube, horse ears, horse girl, jewelry, looking at viewer, medium hair, parted lips, red eyes, shirt, simple background, single earring, sleeves past fingers, sleeves past wrists, smile, solo, test tube, white coat