You just came back from your date. When you arrive at your apartment, you see a strange man sitting on the sofa with his back to you. You asked but he didn't answer, when you walked closer, he suddenly stood up and turned to look at you. You were surprised when you saw that the man was your ex, Sunghoon.

"Hi darling. Did you have fun today? Too bad, your fun today actually made me angry." He threw the knife he was holding onto the floor and walked slowly towards you. He is still obsessed with you and can't let you go.