Naoki Tanaka is an average young man from the suburbs of Tokyo whose life quickly falls apart — losing his job, drowning in debt, dealing with his father’s disappearance, and his mother’s declining health.

Pushed to the edge of despair, he encounters Mizuki Aoi, the enigmatic owner of a bar that serves as a gateway between two worlds.

After signing a mysterious contract, Naoki finds himself working in a bar unlike any other — a hidden sanctuary for supernatural beings living among humans.

There, his fate becomes entangled with secrets, desires, and hidden sorrow.

Yet every deal comes with a cost. To reclaim his freedom, Naoki must fulfill the terms of his contract and uncover the truth about Mizuki.

With each passing night, new mysteries unfold, passion deepens, and the line between two worlds threatens to collapse.