"Back then, the virus was rampant and the human species was close to its demise. There were still many who pressed on with finding a cure for the virus, but in the end, they did not discover a realf antidote." He sighed, his face darkening. "Initially, one vaccine could indeed suppress the virus. But as time went by, the virus mutated within the infected person's body, evolving. It transformed into a more deadly virus that killed at a faster rate. The infected victims would turn entirely blue and lose all sanity, turning into an unfeeling monster that could only kill."
"Zombies!" Yao Si exclaimed.
"You can say that." He nodded. "But when the news spread, many had already been infected. What's worse was that anyone who got bitten by someone like that would die, including bloodlings."
"Then... what happened next?"