Remnants of a Serpent

The Imperator had succeeded in summoning the master unit, but not without the list of what she didn't know was her strongest piece, because where he goes, so does the other. Hakumen had defeated Terumi, shattering Nine's bindings, and in her uncontrolled rage, she unleashed a spell stronger than anything others have done. She shot Terumi in to another dimension. With Terumi horribly injured, Hazama has taken over...but. What is this world? What are these creatures? And...who the hell is he?