[Machine Translation] In order to save the world, his friends, and the people he cares about, "cautious hero" Seiya is going into a determined battle! The battle against the Demon King is finally approaching! The group takes a brief rest in the Imperial Capital before the final battle, but Seiya has unexpectedly disappeared. ......? As Rista and the others search for him, Isistar-sama reveals to them the hidden past of the "cautious hero"...?