Then he wrote 'Kamakura Denchu Mondo' (literally, questions and answers in a hall of the Kamakura bakufu), describing how his mentor, the great priest Nichiin, refuted arguments of all of the other Buddhist sects in a hall of the bakufu.
師の名僧日印が幕府の殿中で全宗派を論破したことについて「鎌倉殿中問答」として書き残すことになる。