Park Yoonai is her birth name.

But people just call her Rennai.

And she doesn't lead a normal life. In fact, she's not normal. 

Exo's increase in sasaengs has lead to the need for top bodyguard to protect these idols. Without any source, Rennai is placed in Korea and applies for the job with a powerful backing and she is soon to show to these twelves boys that being a girl doesn't necessarily mean she's weak or shy. 

More like a stone brick. 

Unmoveable

Unchangeable

and God damned cold as ice. 

Only that they all think she's in fact a he.