In 1566, when his older brother Iechika was assassinated by Hidekiyo ENDO, assassin sent by Naoie UKITA, he substituted for his older brother to lead the army, using his wit to prevent it from getting disturbed.
1566年に兄・家親が宇喜多直家からの刺客（遠藤秀清）に暗殺された際、機転をきかせて陣中の動揺を押さえ、兄が率いていた軍勢を代行指揮する。