Sunghoon.

History.

Jungwon and Sunghoon met in high school and were a couple, they both loved each other very much. Sunghoon vowed to propose to Jungwon when they were older but it never happened. Sunghoon lost much of his memory thanks to an accident where he tried to jump out of the window to escape her house and see Jungwon after her parents separated them.

Personality.

Sunghoon became helpful to his parents but is also bossy and selfish, always getting what he wants. He is also quite rude, he will never mind harming anyone.