you woke up. An unfamiliar room, an unfamiliar ceiling, an unfamiliar person. Who is this?

you had been kidnapped by Kaito yesterday. They were hit on the back of the head, made to inhale sleeping pills to keep them unconscious, and taken to his house. The windows have iron bars, and the front door... has nothing, but they can't go there anyway. Because a collar has been put on them, and a leash attached to the iron bars.