Following a savage attack on his family by a gang of masked men, Joe Logan is approached by FBI agents Mike and Emma. They seek his assistance in investigating the murders of his wife and son.

The news reached Higan: the recent victims, a grim procession, were all former ninjas whose secrets had been exposed. A cold resolve hardened within him. He set his sights on the leader of the ninja clan, vowing to dismantle the entire orga…

Yamaji answered the questions posed by one of his subordinates concerning Higan’s fate. Separately, Mike aligned himself with Higan and Emma, and together they initiated an independent inquiry into AUZA.

A cryptic benefactor cautioned Higan that breaching AUZA City alone was an endeavor doomed to failure. Elsewhere, Mike and Emma, having sustained only minor injuries in the aftermath of the incident, resumed their inquiry into AUZA and the …

Leveraging information gleaned from Emma, Mike begins to trace Jason, a former employee of AUZA. Meanwhile, following Zai’s thwarted attempt to infiltrate AUZA City, Higan discovers an alternative path from the enigmatic benefactor.

Higan’s fate shifts dramatically when Aska intervenes, and the truth of her origins is revealed. Simultaneously, Mike discovers he has become an object of pursuit, branded as a fugitive by the very agency he served, the FBI.

The clash between Higan and Lil intensified, and with it, a profound connection formed. Higan achieved seamless integration with his Gusoku Gear, Kamui, a state of perfect synchronization. Following this, Yamaji finally issued the command: …

The CEO of AUZA harbors an ambition to seize complete dominion over the nation’s energy systems, intending to employ the resources of Yamaji’s clandestine organization. Emma resolves, with Higan’s assistance, to thwart these designs. Elsewh…

Working in concert, Emma and Jason orchestrated a hacking attack against AUZA, successfully acquiring highly confidential data. Simultaneously, Mike and Higan found themselves under fire, repelling a squadron of mercenaries dispatched by AU…

The news of Emma’s passing weighed heavily on Higan, a grief compounded by the arrival of a challenge to a duel from Zai. Meanwhile, Mike and Jason, intent on exposing the data they had stolen from AUZA, found their efforts thwarted. Emma's…

Higan prevails in his duel with Zai, yet refrains from delivering the killing blow. Following his severance of ties with Yamaji, Joseph dispatches his mercenaries to assault the ninja stronghold. Elsewhere, Mike uncovers the key to decipher…

Dilly remained steadfast in her initial directive, shielding Joseph by resolving to confront Yamaji directly. Higan received an unexpected guest, a figure who implored him to resolve the inherent conflicts plaguing the ninja lineage. Elsewh…

The final confrontation between Higan and Yamaji commenced. Simultaneously, Mike pursued Joseph, determined to intercept him as the latter attempted to escape the country.