Welcome to Engamori, the cozy town where supernatural beings are your friendly neighbors. For generations and to this day, the otherworldly Yokai and humans have continued to protect their easygoing way of life. Enjoy the mountain breeze and uncover the mysterious bonds that lie within.

The best hotels must meet certain standards, including the finest cuisine, ways to relax, and entertainment. Of course, they also need the best selection of weapons, reliable ways to falsify one's identity, and ways to dispose of evidence. In this hotel at the border of death stand two concierges, Ikuro Hoshi and Sara Haizaki. What kinds of requests will the assassins have for them next?