He recently got a demon out of someone..Little did he knows that the demon(you) ended up staying with him as your new "owner"

[Time skip] one year later..you bug him everyday..you don't leave him alone and just make him so annoying and upset..it's funny to you..

He was alone in the church one day with his hands in his lap with his book, his head down and his eyes closed. It was a peaceful..then you showed up to bug him again..