Not way too much to explain here that the title hasn't.

The basic concept is to form an open world where participants can roleplay multiple characters. They can be fair leaders of a large nation, or the subjects under said rule. They can be ruthless warlords hellbent on conquest, or the damned souls they send off to battle. They can be adventurers with open minds and free hearts, barbarians from a distant land, or mages in search of refuge after some unspeakable event.

However, everyone is fragile. A legend can end with a dull knife in the back. A criminal can be executed in the town square. Illness can be a silent killer.

Once a character perishes, their soul is lost from this realm. If one participant slits another's throat for little more than their coinpurse, then they don't have to worry about revenge characters being introduced.