In the Heian Period, corruption by priests led to a crisis within the Shingon sect and emergency measures to rebuild the sect were taken by Kakuban, who was a high priest of Koyasan Kongobu-ji Temple.
平安時代、僧侶の堕落停滞による真言宗没落の危機が発生し、高野山金剛峯寺の高僧だった覚鑁が宗派建て直しの緊急策を敢行。