Ages before the establishment of hidden villages, Genbu visited the Land of Ancestors to confer with its lord, Tenji. After Suzaku made his case for having a lake in the Land of Ancestors' territory be passed to the Land of That, Genbu assured Tenji that returning rightfully owned territories would be the right thing to do, implying that failure to comply would result in an armed conflict between the two countries. When Suzaku brings up Kaguya, Genbu voices interest in meeting her. A few nights later, he and Suzaku bring a great army to the border. When Suzaku receives word from a spy about Kaguya moving to the capital, Genbu says there is no need to hurry in seizing her, as they will soon take the entire country. The next day, Genbu attends peace negotiations with Tenji, making up excuses for moving such a large army to the border. He listens as Suzaku recounts the events of the previous night. After Tenji leaves, Genbu asks Suzaku about his condition, only to be dismissed. He and Suzaku began taking over the country that night, but they along with their army were taken by Kaguya's Infinite Tsukuyomi and bound to the roots of the God Tree.