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Shoji Segawa was a quiet and inconspicuous boy, but, for the first time, he is recognized by people after winning the National Middle School Shogi Tournament. At the age of 26, his dream of becoming a professional shogi player collapses due to an age restriction. After he quits playing shogi, he becomes desperate. With the support of his peers, including Yuya Suzuki, and his love of shogi, Shoji Segawa begins to play shogi again. A miracle happens to him.
After participating to a previous show where they have to bet or be challenged to any kind of competitions, the losing members of the Gaki no Tsukai are selected to spend 24 hours in a setting which they have no knowledge of the theme nor the course of the events. They are exposed to various absurd and crazy situations nonstop for 24 hours and must refrain from laughing. If they do so, hang-men appear and hit the rule breakers with a weapon (the weapon varies every year).
A gang of evil ninjas has stolen the sacred sword of the Lady Mayu and are demanding that her family exchange her for the family treasure. The world's greatest swordsman, Shuranosuke Sakaki, is called in to get the sword back.
