Enter through the back entrance.

As Ryougi enters the building from the back, she sees a room filled with weird light. It was a storage room, but the light wasn't coming from here. The light was coming from the main room of the building and she could hear weird giggles of a woman.

"Someone is here, huh..."

Ryougi got her knife out in a quick swift and slowly moved to the entrance to main room. She didn't enter, but just peeked in. There was a woman... With long black hair, in a business suit and a crazy, almost inhuman expression on her face. She was chanting something, while there were a lot of drunk people on the ground... With some kind of weird energy getting sucked out of them.

Ryougi can attack her right now and reveal herself or try to ambush her.