At the time of conclusion of Treaty of amity and commerce between the United States and Japan in 1858, he was against the imperial sanction and involved in the Demo of eighty-eight retainers of Imperial Court with his adoptive father Tamekazu.
1858年（安政5年）の日米修好通商条約締結の際は養父・為量と共に勅許に反対して廷臣八十八卿列参事件にかかわる。