Hack-Man: The Man Who Won for 15 Years Using His Own Strategy

Year 1990.

A man developed a pachislot strategy on his own. His name was Ren Midorikawa. At first glance he looked like an ordinary office worker, but over the course of 15 years he continued to perfect the strategy on his own. This strategy became the realisation of a dream: "It is possible to keep winning BIG forever".