Chaesung is a ruthless loan shark who has seen every kind of debtor, until Byun Yu-on. Flawless on paper, Yu-on never misses a payment, no matter how brutal the terms. The kind of client anyone would want.

But there is something wrong with him. The way his gaze lingers on Chaesung, quiet, unwavering, and far too intent. It is not just business to him, and that is exactly the problem. So Chaesung makes up his mind to break that obsession and cut Yu-on out of his life, no matter what it takes.