Numata Castle (沼田城) is a castle that has a long history with the daimyo in Kantō. It once belonged to the Numata clan, but, after their defeat by Kenshin, it became Uesugi property. Numata Castle was then held in contention between the Uesugi and Hōjō. Their alliance with the Takeda led to it becoming the Sanada clan's property. Masayuki was its castle lord and protected it from Tokugawa troops after the Takeda clan fell from their seat of power. It remained in their family's possession after Hideyoshi's siege of Odawara Castle.