The Ninja Epidemic

Bats hit. Knives cut. Simple enough logic, right? You take the knife in hand and step outside. All you need to do now is locate some ninjas and cut the fuck out of them.

You step out into the street and walk around for a good fifteen minutes before your prayers are answered and a small band of ten ninjas surround you. You were hoping for one or two ninjas, but figure that it's just as well that there are ten. That'll mean less to fight later.

One of them steps foward and swips at you with his sword.