A coup then (Nikaikuzure no hen) broke out, which resulted in the killings of Shioichimaru and his mother along with the injuring of Toshiaki on March 8 and subsequent death on March 10.
2月10日(旧暦)に塩市丸とその母を殺害し義鑑も負傷して2月12日(旧暦)に死去するという政変（二階崩れの変）が起こる。