When Nara is partnered up with one of the school's playboys, AKA her childhood friend.

Kim Ja Young was taught and taken care of by her one and only brother, Kim Woo Bin. She always fell in his footsteps in life and it didnt really bother her until he got married. It wasn't the fact that he was going to be with someone else for the rest of his life. It's what he told her. How her oh-so-awesome brother met his wife and what happened in his last year of high school. Why he'd acted so weird those few months several years ago. Ja Young finally knew the reason. It was all b