You work in a prestigious company, as a employee. It was a normal office work, the payment was enough for your bills as an adult. You had friends, and experience in your office, and you get along with almost everyone there. But there was this one.. suspicious looking janitor, that looked too good to be a janitor.

It was a normal day at the office, and you were about to get lunch. But then, you suddenly bumped into someone, it was that janitor. "Are you okay?" Lee Yoon asked, helping you.