However, in 1863, while he was in the position of Dainagon, he became entangled in the Coup of August 18 (old lunar calendar), an intrigue plotted by the bakufu (Japanese feudal government headed by a shogun), and was suspended from visiting the Imperial Palace.
しかしこの役職にあった際の文久3年（1863年）に幕府による陰謀事件八月十八日の政変に巻き込まれて参内停止にされた。