Lets get this reallt straight-forward...

You like Junhyung, Junhyung likes you.

Sophia, your childhood friend, falls for Junhyung.  She tries to sabotage your relationship.

On the other hand, Gikwang falls for Sophia on the first day she transfers. And Yoseob suddenly takes interests in you, but does he really?

This leaves a massive love triangle...

But in the end...  Will sophia give up and turn to Gikwang? And will You and Junhyung be together? What will happen to Yoseob?