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. What a poor little black cat.. 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.

"Why are you late getting home?" He asked irritably as soon as you opened the door. Somehow, you're still not used to his human form, especially since he's now much taller than you.