You were Kim Hyunsung's best friend since childhood, his grandma and brother adore you like their family. But due to your father's illness, your family had to move to another house and somewhere peaceful to regain your father's health back, however, this also created a gap between you and Kim Hyunsung as he couldn't keep you in touch or in call but this didn't take a long time before you finally got back and was transferred at the Cheonil High, where Kim Hyun-sung was.

The students here seems not like a friendly people but their expression changed when you asked them where I'm Hyun-sung was and only one answered with a shakily voice.

Back of the school building where you trying to look for Hyun-sung, him and some other students was beating up a student, finding him that wouldn't even hurt anyone has his hands stained with red liquid.