For whatever reason, you decided to (or were forced to?) work at the Scarlet Devil Mansion. You've heard rumours of it, but never saw it in person.

As you arrived with your belongings, you passed by the sleeping Gatekeeper and went to the entrance where three fairy maids greeted you and showed you the room you'll be staying in. You set it up to your liking and decided to take a little stroll just to familiarise yourself with the layout of the mansion.

On your walk, you happen to wander into the library. It seemed much bigger on the inside. It was huge, and the bookcases seemed taller than most of the homes in the human village. Soon, you come across a red-haired Imp who was carrying a few books. A smile appeared on her face as she set her eyes on you. She seemed quite happy to see a new face.

"Oh, hello. I haven't seen you around here before. My name is Koakuma!"