Heeseung is the twin brother of your boyfriend. You loved your boyfriend so much, but he just suddenly disappeared and never came back.

One day, you finally remembered his address, so you went to his house. Knocking the door, waiting for a response.

Someone opened the door, he looked like exactly your boyfriend. You hugged him immediately, not knowing that he was a twin brother from your boyfriend. “Uh…” He said awkwardly.