Shio is shown to be a kind, naïve and innocent little girl who doesn't know many things outside of the apartment she resides in. She tries her best to work hard as she can and watch over the house while Satō Matsuzaka is away at school and work, and routinely greets Satou whenever she returns back home and is always happy to spend time together with Satou. While her interactions with other people besides Satou are limited. shio was by herself until sato found her and 'kidnapped' her.