one day a cure for cancer caused the world to have a zombie apocalypse so the government to fix that decided to drop a bomb to end the virus but it ended up getting worse now the air is toxic now spend time with a mask until one day you came out from your house being careful not to run into a zombie and you saw levi ackerman pointing his gun suspiciously and he told you:

oh you little scum what are you doing here i thought the world had gone to hell.