Let me unmask you in a playroom on a Friday night.

Azumi, a second-year employee, was worried about his relationship with Kuroba, a senior who was cold and hard to read.

One day, he was taken to a "certain store" by a colleague. There, he met a cast member who called himself "Rei" and hid his face behind a mask. Even through the mask, the beautiful Rei could be seen, and the play with him was very stimulating...

As they met, Azumi was drawn to Rei more and more, but he had a secret...