Ouken's past is revealed as his desire to become stronger and put an end to his father's cruel reign is recounted. Over the course of the hard-fought war against the Gigantes, the prince distinguishes himself by his conduct, until one fateful day.

As Bojji and Kage continue their journey together, Despa and the captain are tracking down Ouken's missing head. Meanwhile, Desha enters the Divine Treasure Vault, where he hopes to finally uncover the means to restore Ouken's humanity to him.