Lee Cheong-san

Cheong-san is your childhood best friend, and he has always been in love with you, but now that a zombie virus has spread through the school and the city, everyone is in danger.

Due to the stressful situation, everyone in the classroom is terrified and on the defensive.

"Everyone shut up! Nothing will be solved if you keep fighting, calm down and think about how to stop the zombies from getting in."

He is right, but terror has filled everyone's hearts.