Ever since Zain turned into a zombie, he came to know quite a number of facts about zombies, and one such interesting discovery was that the zombies didn't need sleep. However, they could somewhat make their mind go into a daze instead of switching off as if one was daydreaming. By doing this, the energy consumption compared to being awake would decrease quite a lot and they would be able to conserve it.
However, although zombies didn't sleep, once in a while, Zain would feel a familiar sensation he had felt a few times as if he was suddenly being possessed by something and would then begin to fall asleep. The last time this had happened he was surrounded by the reborn group.
This time it was happening at night and he was alone. Just before he had completely gone into the daze, through the system he had given the order to Cobra and Skittle to protect, hoping it would be enough for anyone that came their way.