CHARACTER DESCRIPTION

• Park Hae Rin (You)

- Clumsy

- Cheerful

- Like childish stuffs

- Forgetful

- Kindhearted

• Kim Jongin (Kai)

- Unpredictable

- Mysterious

- Hides a lot of secrets

- Love dance so much

- Moody yet warm when he's with someone he adores

• Lee Eun Yong

- Hae Rin's best friend

- Cheerful

- Evil, but she cares about Hae Rin so much

- Like to tease the others

Kim Jongin, SM Entertainment trainee who wants to keep his identity as trainee from their friends.

You, Park Hae Rin, is Kim Jongin's classmate since the first year, but until the third year you don't have any courage to talk with nor greet him first.
But one day an unpredictable things happened..

Kim Jongin no longer could hide himself, but he got someone to hide as a secret.

So what happened actually between Park Hae Rin and Kim Jongin? And who's that girl that he was hiding?

Here the story goes!