The Imperial Court brought up an old case from before the Tokugawa Period to counter Sadanobu, who justified his opposition with Shushigaku (Neo-Confucianism based on the teachings of Zhu Xi and his followers), and so this developed into a scholarly dispute between the Imperial Court and the Bakufu.
朝廷では徳川時代以前の古例を持ち出し、朱子学を正当とする定信と対抗し、朝幕間の学問的論争に発展する。