This incident has many suspicious points: the retired Emperor Toba had FUJIWARA no Tadazane protect a person calling himself Yoshichika, who was a serious criminal whom the Cloistered Emperor Shirakawa had tracked down and killed; and furthermore the retired Emperor punished the person who killed this criminal instead of giving him a reward.
この事件はかつて白河法皇が追討させた大罪人の義親を名乗る人物を、鳥羽上皇が藤原忠実に保護させ、更にこの罪人を殺した者を賞するどころか罰したなど、不審な点が多い。