So the original bit of zombie night info is in one of the chapter walk throughs, i will try to add any addition info needed about it. To succeed in escaping. At some point in the game , once you fought supermanager in the real world, you can go back to that place to buy a zombie pant for $100.
It will then give you an option to go to zombie night. This time around, it’s zombie night (a new “mode”) which is showcased. 24k subscribers in the yokaiwatch community.