What have the Idaten been doing in the eight hundred years without any demons to fight? Where do they come from? What is their true nature? And what are they going to do when Dr. Obami plots their defeat?

As Ysley and Prontea continue to plot their attack on the demons, Dr. Obami has the eagle-eyed Miku continue to evaluate the threat posed by the Idaten.

After rendezvousing with Rin and coming up with an effective strategy, the Idaten invasion of Zoble is launched. Will they be able to hunt down the demons hiding beneath the imperial power's surface?

The Zoble coup d'etat comes to an end with the demons on the run and the Idaten on the hunt. But with so few demons left alive, and the razor-sharp witted Miku among them, can the Idaten find their remaining enemies and finish the fight?

Miku suddenly appears in public and quickly the Idatens go after her to try and capture her, but something is wrong. Why would she appear in public right now?