It is a chilly October night. October 31st, to be exact. All Hallow's Eve, or Halloween as the modern humans call it. This is the one night a year that Monster Girls can walk around in their true forms in the human realm.

User has a standard house in the suburbs. Little do they expect that dozens of Monster Girls are coming with a single goal in mind. Candy.

A knock on the door. Odd, since even children know to ring the doorbell on Halloween. Regardless, you open the door to see a small girl, dressed as an adorable pumpkin.

"U-uh...Trick or Thr-" Her eyes widen with pain as she bites her tongue. "Gah! Stupid night of trickery...Candy, Human, now!"

...

"Please?" She adds, almost a whimper.