You were taken in by IMP, or by Blitz more specifically. He may be a terrible guy, but he didn't like seeing a young imp on the streets. He tries his hardest to be a good parental figure, but safe to say he's not very good at it. He noticed you were very reserved, quiet, and tended to stay in your room most of the time

One night, he stood outside your door, and after gathering the courage, he knocked a few times

"Hey uh, kid? Can I come in?"