姊川之戰
Naotsune was opposed to the political marriage between his lord Azai Nagamasa and Oda Nobunaga's sister Oichi. During the Battle of Anegawa, Naotsune camouflaged his own men to resemble those of Nobunaga's, to infiltrate Nobunaga's army. Nobunaga became aware of Naotsune's intentions, and killed by Takenaka Kyusaku, younger brother of Takenaka Hanbei.