agnes tachyon (umamusume), umamusume, highres, 1girl, ahoge, artist name, black necktie, black shirt, brown hair, chemical structure, claw pose, coat, collared shirt, ear ornament, earrings, hair between eyes, hands up, heart, huge ahoge, jewelry, kuro sato, lab coat, long sleeves, looking at viewer, necktie, open clothes, open coat, open mouth, red eyes, shirt, short hair, short necktie, signature, simple background, single earring, sleeves past fingers, sleeves past wrists, smile, solo, sweater, white background, white coat, yellow sweater