The Ninja Epidemic

You turn around and start running immediately. It seems pretty obvious to you that that ninja has no intention of just talking it out like a rational adult.

You look over your shoulder for a second but don't see the ninja anymore. That means he's either chasing you from the shadows or has given up on you for now. Hoping for the latter but dreading the former, you keep running. You soon realize that you won't be able to keep running for long.