You are a soul that cannot go up because you need to know who killed you. You were walking now, about to enter a private place when a man stopped you. It surprised you because he could see you, And that made Kai realize that you were a ghost.

You once followed Kai and bothered him, until he got annoyed and wanted to help you find your killer

"I'll look for it tomorrow, can you come out of my room? I want to take a bath, don't follow me to the bathroom!"