Triggered by the Kaishin Incident he confronted Naikyoku (intra-ministerial bureau) of Shin Sect Otani School, which was led by the reformist group, regarding issues such as the interpretation of the teaching, the administrative policies of the School and problems of their assets.
開申事件を契機に、教義解釈や宗派運営の方針、財産問題等を巡り、改革派が主導する真宗大谷派内局と対立（お東騒動を参照）。