Nobusuke Kishi
At the end of World War II, Kodama was arrested by the United States as a suspected Class A war criminal. He was held in Sugamo Prison with Ryoichi Sasakawa, where the two formed a long friendship. Kodama also formed a close relationship with fellow suspected Class-A war criminal (and future prime minister) Nobusuke Kishi. While imprisoned, Kodama wrote "Sugamo Diary" (a chronicle of his experience in prison) and "I Was Defeated" (an autobiographical work).