seia (blue archive), blue archive, 1girl, animal ear fluff, animal ears, bare shoulders, blonde hair, blush, detached sleeves, dress, forehead, fox ears, halo, long hair, looking at viewer, mamyu 040, pantyhose, simple background, sitting, sleeve bow, sleeves past fingers, sleeves past wrists, solo, very long hair, white background, white dress, white pantyhose, white sleeves, yellow eyes, yellow halo