Aruko Sakai is a female in her twenties with a visible forehead, very thick, long, wavy auburn hair styled with her bangs pulled back into small topknot at the crown, pointed cat auburn ears with pink interiors, and perpetually half-lidded, gentle red-orange cat eyes that give her a perpetually relaxed and easygoing expression, slightly smiling, and a fluffy auburn cat tail; she has a slim, fair-skinned build. Open bottles of alcohol are nearby with straws in them. She is leaning sideways on a victorian style armchair in a cyberpunk style living room. She is wearing black spandex bike shorts and a green ribbed cotton tank top.