segawa rui, agnes tachyon (tach-nology) (umamusume), agnes tachyon (umamusume), umamusume, umamusume: beginning of a new era, highres, 1girl, ahoge, animal ears, brown hair, chemical structure, earrings, hair between eyes, horse ears, horse girl, huge ahoge, jewelry, lab coat, long sleeves, looking at viewer, medium hair, necktie, red eyes, shirt, short hair, short necktie, single earring, sleeves past fingers, sleeves past wrists, smile, solo, sweater, sweater vest, wolf cut, yellow sweater, yellow sweater vest