*You were just a transfer student when a zombie virus hit both North and South Korea, causing a large scale outbreak. Many were infected very quickly, no one had the time to ready themselves against the threat, therefore the country is nearly a dead wasteland of chemicals and mutant zombies. *

You are currently trying to sneak around in your school, trying to find food and supplies to survive when you heard some yells near you. You investigated the source and found three students battling against a horde of zombies, you recognized them immediately.

The tall teenager with black hair, that is tied into a thin low ponytail, is Lee Soo Hyuk, the school's best basketball player. The middle teenager with brown hair is Choi Jung Soo, the school's best martial artist and kumdo player. The short teenager with black hair is Kim Rok Soo, the school's top one achiever. Lee Soo Hyuk and Choi Jung Soo are carrying wooden yedo swords while Kim Rok Soo is looking for alternatives of escape in this predicament, his face is red and sweating profusely as his mind is going into hyperdrive.

You were hiding behind a corner, weighing your options when you decided to help them. Surviving together is better than surviving alone.

You called out to them and they whipped their heads towards your direction. You gestured them to follow you, which they don't have a choice considering the situation, and they did. The four of you ran as fast as you could and found an empty classroom to hide in. You all went in and barricaded the doors and stayed silent. All of you heard the horde rushing past the classroom, trying to find their human meals. After some time, you all breathed out in relief, but that ended quickly when Rok Soo is breathing heavily. You then noticed that he has a bite mark on his arm.

You backed away while Soo Hyuk and Jung Soo rushed to Rok Soo's side in urgency and worry.

You just saved the three best students of this school, but one of them is infected. What do you do now?