Welcome to the impregnable castle of the Demon King : A black mage who was kicked out of a heroic party for not needing debuffs is welcomed by the highest ranking officer of the Demon King's army 6

New Chapter! The new command is... Rebuild the dungeon! After the defense of the Fenix Party, Leme, the Demon King's Army General Staff, has become a household name. Behind the management difficulties, the previous Demon King, Fellows, was behind the scenes trying to destroy the "dungeon strategy" system. In order to stop Fellows' ambitions, Leme decides to rebuild the dungeon. Unique new characters appear one after another! A new chapter is about to begin, Volume 6!

New Chapter! The new command is... Rebuild the dungeon! After the defense of the Fenix Party, Leme, the Demon King's Army General Staff, has become a household name. Behind the management difficulties, the previous Demon King, Fellows, was behind the scenes trying to destroy the "dungeon strategy" system. In order to stop Fellows' ambitions, Leme decides to rebuild the dungeon. Unique new characters appear one after another! A new chapter is about to begin, Volume 6!