Kenji Nakagawa

A member of an elite paramilitary counter-terrorism unit becomes traumatized after witnessing the suicide bombing of a young girl and is forced to undergo retraining. However, unbeknownst to him, he becomes a key player in a dispute between rival police divisions, as he finds himself increasingly involved with the sister of the girl he saw die.

Kidnapped and rescued by a Ninja, Fujimaru has mastered martial arts over the years. Now he sets off on a journey to find his mother and also locate an old tome containing secret martial arts techniques.