The two plagues that nearly destroyed the world were eventually brought under control through global cooperation, but the immense power displayed by the Stone Statue Virus and the Evil Spirit Virus also attracted the greedy attention of many interested parties.
In particular, various national militaries and violent criminal organizations began to study the two viruses, hoping to derive some new toys from them.
Perhaps some serums that granted powerful abilities, or maybe some entirely new special viruses, and so on.
However, after the plagues, all countries had sealed off the quarantine zones and incinerated the bodies of the infected, so obtaining samples of the two viruses was no easy task.
