agnes tachyon (lunatic lab) (umamusume), agnes tachyon (umamusume), umamusume, highres, 1girl, ahoge, animal ears, bikini, black bikini, breadrye, breasts, brown eyes, brown hair, cleavage, denim, denim shorts, green shirt, hand on own chin, horse ears, horse girl, horse tail, looking at viewer, official alternate costume, open fly, shirt, short shorts, shorts, simple background, smile, solo, swimsuit, tail, tied shirt, wet, white background, white mouth