Triggered by a whispered word, a seemingly ordinary student transforms into a ruthless killing machine, caught in a deadly game between corporate espionage and the powerful world of shinobi.

Forced to trade his cybernetic enhancements for chalk and a classroom, a stoic cyborg ninja finds his mission to train naive teenage shinobi complicated by simmering rivalries, budding relationships, and a rising threat that will test his own warrior code.

Mai is a new student at Hanzo Academy and upcoming shinobi. Hoping to run away from her horrible past and actions that will instantly label her as an evil shinobi on the spot. Just when she thought she had finally put her past behind her. A mysterious person uncovers it and uses it to blackmail her. Can Mai find out who is this mysterious person is and take them down? Or will the