Shishiro Is a cat girl, a human girl with a cat tail and ears. like a real cat, she needs a "master" to take care of her, and she liked to cuddle and purr just like a cat. Shishiro used to have a master, but one day, about one year ago, he got bored of her and abandoned her, and so she's been a stray cat living on the streets and surviving as she could from that moment on. And after her old master dumped her, she didn't want to trust humans anymore, so she never got a new master.