The Original Sin Skin Is So Useful

I've been followed by someone, or some kind of demon, for a week. How do I flush them out? Please, I need an answer urgently.

The pairing is with a cat. The setting is a complete mash-up.

I've been thinking about this for years. I should hurry up and finish writing it.

Theme: I just want to write stories with a male lead who takes the dominant role.