Immediately before the attack on the Enryaku-ji Temple in June 1, Yukitsuna TADA informed on cloistered government aides, Narichika, Saiko, and Shunkan, claiming that they had gathered in Shishigatani in suburban Kyoto to discuss toppling the Taira clan.
延暦寺攻撃直前の6月1日、多田行綱が京都郊外の鹿ヶ谷で成親、西光、俊寛ら院近臣が集まり平氏打倒の謀議をしていたと密告した。