During the trial, Shusui told prosecutors, 'the current Emperor is from the Northern Imperial Court, which assassinated the Emperor of the Southern Imperial Court and robbed him of the Three Sacred Treasures of the Imperial Family', and it was leaked to the people and triggered the argument on which Court was legitimate.
また、秋水が法廷で「いまの天子は、南朝の天子を暗殺して三種の神器をうばいとった北朝の天子ではないか」と発言したことが外部へもれ、南北朝正閏論が起こった。