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Yes, he wasn't just an assassin, he was also a cannibal and a ghoul .

Eisaku Shin Nakamura is alleged to have killed at least nine hundred women over the course of his serial killer career. Eisaku Nakamura was a Japanese priest who was priested for serial murder during his teenage years.

He was priested for stabbing to death at least nine hundred women, including several teenage girls.

Akira - in Nis Higuchi was involved in fraud and killed at least five people.

In which he is known to have tricked the Japanese police into believing that he was only connected to the fraud and not the murder. By engaging in trust scams, he murdered two people, was placed on the most wanted list, and killed three others while on the run.

In the past, when the tunnel was conceived and built, there were numerous cases of deaths and disappearances, the place became famous because many workers were subjected to slave labor, suffered and ended up dying of exhaustion.