Human Vaccine/Woosan (Ateez FanFic)

One was destined to save the world while the other was destined to destroy it.
One was made as a human vaccine, capable of curing anything and everything...except the first hybrid zombie.

Or...
Zombie Hybrid San has spent the last two years after the outbreak looking for his long time crush, anchor (the person who can keep him from losing his humanity as a zombie), and the human vaccine (capable of curing anyone but San). Wooyoung on the other hand has been stuck in a cult compound, turned lab safe haven for himself, some of the scientist who experiment on him, his elder brother, and a little girl who should have meant the world to him.