She was one of the nine.

Yes.
You read that one right.
One of the nine.

Because Lee Jonghyun lied about having eight ex-girlfriends; he's had more than that.
But she's the one that he loved the least; the one he got over the fastest and probably the one Jonghyun never took seriously.

The fling.
The past time.
The summer delight.
The joke.

Just a crush.

Kim Chiu was no special girl in his eyes. She happened to have stayed in Busan for a vacation for a while when she was eighteen and that's when she met Lee Jonghyun. She spoke funny Korean and he found it cute; he found her cute.

Lee Jonghyun never remembers their anniversary.
He couldn't even recall how he asked her out.
All he remembers is that he somewhat went out with a girl from the 'Philippine' (He didn't even got that one right. It's supposed to be 'Philippines'.)

Years later, he became a member of the popular K-POP band CNBlue. Jonghyun is now an idol, a very handsome and talented one at that. While she becomes one of the most sucessful and prettiest young actresses in the Philippine, er, Philippines.

Then Blue Moon PH happens.
 

Their paths cross again... and they realize once in their lives,

They happened...