The 1584 siege of Kanie was one of many elements in Toyotomi Hideyoshi's campaign to consolidate his power over the lands held by the Oda clan in Owari province, Japan.

When Hideyoshi forces came to attack Kanie castle, it was held by Maeda Tanetoshi on behalf of the Oda.

Kazumasu negotiate and convinced his cousin, Tanetoshi, to switch sides joining Hideyoshi and giving up the castle to him.

Meanwhile, the Oda-Tokugawa army were led by Sakai Tadatsugu, Okanabe Mori, and Yamaguchi Shigemasa spearheading the attack towards Shimoichiba castle, while Sakakibara Yasumasa, Osuga Yasutaka were deployed to capture any fleeing defenders.

The port of Kanie also blockaded as the Hatamoto officers of Tokugawa such as Mizuno Katsunari, who also hijacked two ships belongs to Kuki Yoshitaka.