When was it that she has unknowingly fallen in love with the carefree boy next door? 

The moment he laid his eyes on her, he knew. She was going to intrude and impact his life whether or not he likes it.

He has a huge crush on her and everyone knows that. Everyone except for the said person herself.

Her (you): Kim Yeojin

18 years old, goes to JYP academy 

Cold, emotionless, a great fighter and isn't scared to fight someone twice her size. Due to her cold nature, she has no friends. But, under the cold and emotionless exterior, could pain be hidden? 

Him: Woo Jiho

20 years old, goes to Seoul University

Like Yeojin, he is a skilled fighter and won't hesitate to bring down anyone who hurts him or his friends. Always appears happy, carefree, and aloof giving off the impression that he has nothing to worry about. But, what could he be hiding under the mask? 

Him: Lee Byunghun 

18 years old, goes to Hyundai Academy

A hyper and happy student that appears flirty to everyone. But, his heart was captured the moment he met her. Loves you very much and would do anything to protect you.