Kirin, the uke wanted to find out more about his sister suicide so he approach Kangmo so that he can enter the club. Kangmo is a psychopath so he doesn't feel love towards Kirin. Kirin is more like his leash. Once Kirin is gone, no one can stop him from his thirst to kill. I like how realistic this picture a psychopath. He can be tame at some point but his thirst to kill will not subside. Just let me imagine Kangmo in love with Kirim
The Beast Must Die