Togane Takichi, the CEO of a construction company, is shot dead in the street in Nishi Shinjuku in Tokyo. The only eyewitness, Odagiri Naoto, refuses to cooperate with the police for some reason. Fukamachi Kotaro, a senior member of the IR Analysis Office, is ordered by Nitta Yukihiko, the head of the First Investigative Division, to handle Odagiri. The newly established office was set up on the pretext of tracking and monitoring suspects and witnesses to advance investigations by using the many surveillance cameras and GPS trackers installed in Tokyo. However, it actually plays a supporting role to the First Investigative Division. In fact, Odagiri’s wife Chiharu died in an accident in Numazu five years earlier. But six months ago, he saw a woman who looked just like her in Tokyo. Even though he consulted the police, he was brushed off. This is why he completely refuses to assist the police. The IR Analysis Office begins an investigation to determine the identity of the woman whom Odagiri saw and prove that she is a different person. Fukamachi and his subordinate Izumoto Noriko quickly head to Numazu where the obtain information on Chiharu’s secret meeting with Togane. Just as suspicions about Chiharu’s involvement in Togane’s death emerge, Fukamachi is told by Nitta that he no longer needs to be involved in Odagiri’s case. He and Noriko continue the investigation on their own and learn that another woman had been pretending to be Chiharu. They soon discover that the impersonator is Nakatani Asuka, who is a hairstylist in Tokyo. However, Asuka says she knows nothing. Meanwhile, it becomes very likely that the suspect in Togane’s murder is a Vietnamese who had company related trouble. The First Investigative Division makes their rounds of the Vietnamese restaurants in Tokyo as they focus on a person with a red star tattoo on the neck. Before long, they learn that Odagiri had met Togane in the past and there are also records of a long travel history to Vietnam. In addition, they find out that Asuka’s father committed suicide in Vietnam too. What is Asuka’s motive for getting close to Odagiri? And what is Odagiri’s true intent?
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