Indonesian here!
THIS IS GREAT!
I personally love the idea of working as a cashier and defending the place from creatures alike. This is what I'd imagine myself if I work as a cashier in the middle of the night.
What if the customers aren't real?
What if there is a monster lurking out there waiting for me?
What if the world suddenly ends? Huge sinkhole suddenly appeared? Meteor falls down and hit the store?
Yea these are the type of wild thoughts I'd have when I'm bored of work.
Great job!