Nagamasa concluded an alliance with Nobunaga ODA, who was gaining his force by gripping the control over Mino Province at that time, and married Oichi no kata, Nobunaga's younger sister, to ensure the peace and security of the Azai clan.
その長政は美濃国を支配して勢いに乗る織田信長と同盟を結び、信長の妹・お市の方を妻として迎えて、浅井氏の安泰を図った。