The Crossbell State—

Bordered by the Erebonian Empire to the west and the Calvard Republic to the east, this prosperous state was once in crisis due to the actions of a fanatical religious group.

Tensions erupted in a war. Peace was eventually restored through the efforts of the Police Department's Special Support Section.

The officials associated with the Order and the mafia were driven away, it appeared that the future of Crossbell was bright;

However, this was only a temporary respite on the Zemurian continent.

Pressure from the Erebonian Empire and the Calvard Republic is increasing,

and signs of another upheaval are imminent among Red Constellation, Heiyue, and Ouroboros.

All paths lead to Crossbell, and countless unsolved mysteries going back to ancient times are about to be revealed at last.
This is a story about living in modern times—a gift to all those who fight to overcome the walls that bind them.