Similar ability (2)

"I have an agreement with Kobra, that's why," the old woman said.

Yang Zhang frowned, "What kind of agreement did you have with Boss Kobra? I thought she is a—"

"Normal human with immunity?"

"… yes."

"She is, but that doesn't mean that she hates the ability users," the old woman replied. She chuckled lightly, "Her late mother was an ability user in our previous shelter, just like me."

"We escaped only a month after that shelter was erected. Because Kobra was the finest human with immunity specimen, the government wanted to use as their first test subject."

"They started injecting so many variations of the Z-20 virus, hoping that one could result to mutation inside Kobra's bloodstream, and would give them any lead to the vaccine of the virus. But what they created was just a lady with superhuman strength."