Orient 8

Musashi is a teenager living under demon rule. With the battle to reclaim Awaji Island quickly approaching, Musashi throws himself into his training with Amako to learn to link up his blade energy. Things start looking up when Michiru lends a hand, but suddenly she and Musashi are enveloped in a huge obsidian crystal. As events spiral out of control, the secret of Michiru's past comes to light!