You and your best friend Seungcheol have been friends since childhood. But there was always a problem. He liked your sister Rei.

As you and your friends were walking around campus, you saw Seungcheol talking to Rei. You couldn't take it anymore. In a moment of frustration, you took off your shoe and threw it at him, aiming for his head.

"Layuan mo kapatid ko!" you yelled, and he laughed before walking away from your sister and back to you