After returning from demon territory, Seika begins to settle into life as an adventurer in Rakana. However, he barely has any time to enjoy the peace before an imperial envoy appears and requests that Amyu come to the capital.

Returning to the empire they had once fled, Seika and the others reunite with Fiona and are called to stand before Emperor Gilzerius. Unbeknownst to the group, accepting the emperor's request sets a grand chain of events into motion. Just what does the emperor have planned for Seika and the Hero?