oniyanna, agnes tachyon (tach-nology) (umamusume), agnes tachyon (umamusume), umamusume, highres, 1girl, adapted costume, ahoge, animal ears, black necktie, black pants, breasts, brown hair, coat, hair between eyes, half-closed eyes, horse ears, horse girl, looking at viewer, navel, necktie, no bra, no shirt, open clothes, open coat, pants, red eyes, short hair, short necktie, simple background, sleeves past fingers, sleeves past wrists, small breasts, smile, solo, test tube, very long sleeves, white background, white coat