Given the task definition and input, reply with output. In this task, five ordered key facts are given. All the given facts are expressed in natural language. Your job is to generate a story 100 to 1000 words long, that includes all the facts given as input in their order of appearance while expanding upon them to produce a broader, yet coherent, narrative.

Fact1: Logan was forced to kill to save hermit in Yukon tormented by hallucinations of Jean Grey world, Fact2: Ichiro 's Green also known as Viper introduces something into Logan 's body night, Fact3: Ichiro who find after demonstrating mutant powers on him demands Logan and Mariko, Fact4: Mariko is brought before Shingen at Ichiro 's estate, Fact5: Shingen attacks but Yukio holds Shingen long enough for Logan to recover and kill Shingen
In 1945, Logan is held in a Japanese POW camp near Nagasaki. During the atomic bombing of Nagasaki, Logan rescues an officer named Ichiro Yashida and shields him from the blast. In the present day, Logan lives as a hermit in Yukon, tormented by hallucinations of Jean Grey, whom he was forced to kill to save the world XMen: The Last Stand. He is located by Yukio, a mutant with the ability to foresee peoples deaths, on behalf of Ichiro, now the CEO of a technology zaibatsu. Ichiro, who is dying of cancer, wants Logan to accompany Yukio to Japan so that he may repay his life debt. In Tokyo, Logan meets Ichiros son, Shingen, and granddaughter, Mariko. There, Ichiro offers to transfer Logans healing abilities into his own body, thus saving Ichiros life and alleviating Logan of his nearimmortality, which Logan views as a curse. Logan refuses and prepares to leave the following day. That night, Ichiros physician Dr. Green also known as Viper introduces something into Logans body, but Logan dismisses it as a dream. The next morning, Logan is informed that Ichiro has died. At the funeral, Yakuza gangsters attempt to kidnap Mariko, but Logan and Mariko escape together into the urban sprawl of Tokyo. Logan is shot and his wounds dont heal as quickly as they should. After fighting off more Yakuza on a bullet train, Logan and Mariko hide in a local love hotel. Meanwhile, Ichiros bodyguard Harada meets with Dr. Green who, after demonstrating her mutant powers on him, demands he find Logan and Mariko. Logan and Mariko travel to Ichiros house in Nagasaki, and the two slowly fall in love. Meanwhile, Yukio has a vision of Logan dying and goes to warn him. Before Yukio arrives, Mariko is captured by the Yakuza. After interrogating one of the kidnappers, Logan and Yukio confront Marikos fiance, corrupt Minister of Justice Noburo Mori. Mori confesses that he conspired with Shingen to have Mariko killed because Ichiro left control of the company to Mariko, and not Shingen. Mariko is brought before Shingen at Ichiros estate when ninjas led by Harada attack and whisk her away. Logan and Yukio arrive later and, using Ichiros Xray machine, discover a robotic parasite attached to Logans heart, suppressing his healing ability. Logan cuts himself open and extracts the device. During the operation, Shingen attacks but Yukio holds Shingen off long enough for Logan to recover and kill Shingen. Logan follows Marikos trail to the village of Ichiros birth, where he is captured by Haradas ninjas. Logan is placed in a machine by Dr. Green, who reveals her plans to extract his healing factor and introduces him to the Silver Samurai, an electromechanical suit of Japanese armor with energized swords made of adamantium. Mariko escapes from Harada, who believes he is acting in Marikos interests and frees Logan from the machine. Harada sees the error of his ways and is killed by the Silver Samurai while helping Logan escape. Meanwhile, Yukio arrives and kills Dr. Green as Logan fights the Silver Samurai. The Silver Samurai severs Logans adamantium claws and begins to extract Logans healing abilities, revealing himself to be Ichiro, who had faked his death. Ichiro regains his youth, but Mariko intervenes and stabs Ichiro with Logans severed claws. Logan regenerates his bone claws and kills Ichiro. Logan collapses and has one final hallucination of Jean, in which he decides to finally let go of her. Mariko becomes CEO of Yashida Industries and bids farewell to Logan as he prepares to leave Japan. Yukio vows to stay by Logans side as his bodyguard, and they depart to places unknown. In a midcredits scene, Logan returns to the United States two years later and is approached at the airport by Erik Lehnsherr, who warns him of a grave new threat to the mutant race; and Charles Xavier, whom Logan thought was dead.