The last candidate to become a demon king, Eir the former human, has been reborn back from the betrayal. His task has been given by the dark god to assemble all the other six candidates which forgotten their purpose... and lead them under one banner... which is his.  This is a short story of Eir, who determine to spread the despair and chaos through the continent    P/S: This is a side story since the main has not been published yet.