youyueyue, seia (blue archive), seia (swimsuit) (blue archive), blue archive, 1girl, animal ear fluff, animal ears, ass, barefoot, blonde hair, closed mouth, cross halo, expressionless, extra ears, fox ears, fox girl, fox tail, full body, halo, jacket, long hair, looking at viewer, lying, official alternate costume, on stomach, one-piece swimsuit, side ponytail, simple background, solo, spot color, sunglasses, swimsuit, tail, the pose, toes, visor cap, white background, white one-piece swimsuit, yellow jacket