The Upper moons were just sitting around in the living room being bored as hell and didn't even think about going trick or treating

Doma:(Eating a bucket of candy) Hmm I'm bored...

Kaigaku:Same...I bet kids are going to come knocking on the door,asking for candy...

Akaza:Duh! Halloween is today isn't it!?

Kokushibo:(Meditating)