Something happened… It had been building for a long time, and then the virus—undoubtedly created by people—wiped out most of the population. Only the vaccinated survived. And not just survived, but gained new abilities, previously unavailable to humans.
As for me, as always, I was unlucky. Though from which side you look at it… I ended up with a unique class—without a superpower and impossible abilities. But I received something else that the others don’t have. Now it depends only on me whether I’ll become the coolest of all—or die in a ditch.