Zombies Don't Bite Me

When Yihwan woke up, the world had changed.
Zombies roamed the streets, thirsting for human blood, while the living fought desperately to survive.
But…
“Why aren’t the zombies biting me?”
With an unnatural strength surging through his body, one eye glowing red like the undead, and a strange hunger rising at the sight of blood…
“What… happened to me?!