SLEEPLESS Nocturne | SLEEPLESS Nocturne

They were enjoying an unfamiliar road trip date. Kawaai Tomoki and Komori Yukino are a college couple who have just started dating.

Leaving his car stuck with a flat tire, he arrives at the Black Rose Pavilion in search of help.

The two are let into the house by the courtesy of the bewitching Marie Mamiya. The two of them were overwhelmed by the gorgeous and luxurious space.

In addition to the maid Aira, the house is home to Mamiya Mariya, Marie's daughter who is as beautiful as Marie and another(?) daughter, Mariya, who is also a maid. Tied to a collar, dressed in a daringly modified maid's outfit, with a large bedbug on her head. The four of them lived with a girl who even had a tail-like thing attached to her bottom, My name is Rui Takamizawa Ruyan!

Tomoki and Yukino are spending a few days at the Black Rose House, a Western-style mansion tucked away deep in the mountains and they don't yet know that they're about to fall prey to a bizarre party...