The Azai Clan was a prominent samurai family in Japan during the late 16th century. They were based in the Omi Province and played a significant role in the Sengoku period, a time of social upheaval and military conflict. The clan is best known for its rivalry with the Oda Clan, particularly during the battles for control over central Japan. The most notable leader of the Azai Clan was Azai Nagamasa, who was known for his military skills and strategic alliances. He married Oichi, the sister of Oda Nobunaga, which initially created a bond between the two clans. However, tensions eventually led to conflict, culminating in the Azai Clan's defeat in 1573.