I Work the Night Shift at a Convenience Store, and the Whole World Is Waiting

The real world and the "inner world" are separated by nothing more than the roll-up shutter of a convenience store's night shift.

The protagonist is a night-shift clerk at a 24-hour convenience store.

Every day from midnight to 6 a.m., the store serves nonhuman customers: monsters, Systems, gods, people from parallel worlds, and humans from the future.

There is only one rule.

As long as the store stays open, the world is temporarily safe.

The moment he closes up and goes home, tonight's "anomalies" will spill into the real world.