Mitsunobu was charged with this incident and deported to Tosa Province, but behind the incident was a fight between the warrior's force being granted the privilege of the ex-emperor (including TAIRA no Tadamori), Sekkan-ke (the families which produced regents), and Daijo Tenno (the retired Emperor) after the demise of the Retired Emperor Shirakawa.
この事件で光信は罪を問われて土佐国へ流刑となったが、事件の背後には白河院没後の故院勢力（平忠盛ら）と摂関家および太上天皇との争いがあった。