Ninja Kamui

After his family was murdered by masked assailants, former ninja Joe Logan is approached by FBI agents to help find the people responsible. Though the organization will never stop hunting him, Joe will have revenge for his family at any cost.

Higan learns about the recent murders of former ninjas who had their covers blown. Desperate for leads, Higan contacts Mike, the FBI agent from the hospital. Without divulging their true intentions, the two of them agree to meet up.

Yamaji answers questions regarding Higan's survival, but he has his own ideas about how to handle the situation. Meanwhile, Mike joins forces with Higan and Emma to launch their own independent investigation into AUZA.

A mysterious benefactor warns Higan that it's impossible for him to infiltrate AUZA City without any help. Meanwhile, Mike and Emma walk away from the accident with light injuries and relaunch their investigation into AUZA and the ninjas.

Mike uses information from Emma to track down a former AUZA employee. Elsewhere, after having his first attempt to infiltrate AUZA City stopped by Zai, Higan learns of an alternate route from a mysterious benefactor.

Aska rescues Higan, and her true identity is unveiled. Now that her betrayal is known, she rushes to prepare Gusoku Gear for Higan, as it's their only hope of defending themselves. Meanwhile, Mike learns that he is now wanted by his own agency, the FBI.

As Higan and Lil engage in combat, Higan achieves complete synchronization with his Gusoku Gear, known as "Kamui." Afterward, he sends Lil's severed head to AUZA's headquarters, and Yamaji finally orders Zai to eliminate Higan.

The CEO of AUZA dreams of taking total control of the country's energy infrastructure using Yamaji's ninja organization. Emma makes it her personal goal to stop them with Higan's help. Meanwhile, Jason and Mike are still on the run.

Emma and Jason combine their efforts to hack AUZA, which results in them obtaining top-secret information. Meanwhile, Mike and Higan fend off a squadron of mercenaries sent by AUZA to stop them.

Higan mourns Emma's death while a letter challenging him to a duel arrives from Zai. Mike and Jason want to leak the data they hacked from AUZA to the public but discover they can't due to Emma's memory drive being encrypted.

Higan wins his duel against Zai but stops short of killing him. Joseph sends his mercenaries to attack the ninja hideout after cutting his ties with Yamaji. Meanwhile, Mike figures out the key to decrypting the data Emma left behind.

Dilly adheres to her original orders and protects Joseph against Yamaji, and Higan has a surprise visitor who begs him to put an end to the contradictions of the ninja clan. Meanwhile, Mike has been captured at FBI offices.

Higan and Yamaji fight a decisive battle, which Zai also joins. Realizing that Joseph is trying to flee the country, Mike manages to track him down, but after being cornered, Joseph tries to blow up the AUZA reactors. Will this be the end of all ninjas?