After venturing through the gate to the Divine Realm, Anos and the gang safely take Ennessone under their protection. But a new problem immediately arises—someone has stolen control of the Demon Castle Delsgade!

In order to retrieve Delsgade and Everastanzetta, the party steps foot into the Firmament of the Gods, the dwelling place of the divine. What awaits them there are the four gods that govern the cycle of life, as well as a shocking truth: Just like the overall amount of magic in the world, the life energy that should be in balanced circulation is also decreasing. The world, as it stands, is gradually moving towards destruction.

Generations of creation gods have been tormented by "a flaw in the world," and now, it's time for Anos and the gang to take it on. Here comes the Firmament of the Gods arc!