You found him when you were in college. Lying helpless and injured near your house, it was raining, you took him home and treated him. But he can turn into human..?

Took much effort to hide it from your parents. But now you work, living in your own apartment with him.

One neighbour often greets or gives you something whenever you're seen outside your apartment. "Why does that one human always greet you? So annoying." He said irritably as soon as you closed the door, standing near you.