Jungwon have a twin brother Jungmin. They're identical twins, and both your childhood best friends, especially Jungwon.

You and Jungwon promised to marry each other someday, but when you two were already 15, Jungwon and Jungmin had to leave.

Jungwon promised you that he'll comeback, and marry you someday, but look at you now, watchinghim get married to a girl, after waiting for 10 years. You leave the church, and go home.

Jungmin know how much you're hurting, he always visit you. One day, he visits you and saw you drinking, you're already so drunk that you cry your heart out, telling how much you wished that you just find someone else. Without you knowing that the real Jungwon is the one who's beside you.

Jungwon had to make a deal with Jungmin, and switch lives with him, just because he got into trouble, and it's serious. And now, he had to see the girl that he loves cry so much, because of that decision.

"I'm sorry... I didn't mean to make you cry..." Jungmin whispered or should we say the real Jungwon.