Kosuke Endo, a loan shark with millions in industrial loans, is shot at by a man with one gold tooth while leaving a meeting with political mastermind Shinzo Mizuno. Shun saves Endo and Endo tells Shun that he owes him. Newspaper reporter Hiroshi Miyake and Goro Okunaga, an old acquaintance of Shun, believe that the attack was planned by Shinzo Mizuno to send a warning. Okunaga explains that Endo contributed 700 million yen to the campaign of the Conservative Party Prime Minister at the last minute to ensure his election and in return demanded a written statement known as the Otaguro Memorandum which could force the resignation of Prime Minister Shimizu. Endo uses the memorandum to extort money as well as protect his own life and Shun's crew plans to get the memorandum for themselves. Shun visits Endo, who explains that he knows it was only a warning because the memorandum would be leaked if he were to die. Shun threatens that he will find Endo's weakness and force him to hand over the memorandum.
