Doomsday America

"No system, no superpowers, not a saint." Deep version: It takes at least tens of thousands of years to evolve from beast to human. But does it take a year to degenerate from human to beast? Let's give it a try. Thus, the zombie crisis erupts, and order completely collapses. Civilization leaves us behind. The dead walk among us. Fun version: A zombie crisis erupts in America. Everyone celebrates! What? I transmigrated to America? The zombie crisis just started? It's over, I'm doomed. Wait, who draped the Stars and Stripes over me? You... you... you've really done me in!