北條氏康
In 1563, Shingen allied with Hōjō Ujiyasu against Uesugi clan, they captured Matsuyama Castle in Musashi Province. In 1565, Shingen then took Kuragano and Minowa Castle in Kōzuke province. In 1571, Kenshin attacked Shingen's satellite Ishikura Castle in Kōzuke province, and they again faced each other at the Battle of Tonegawa, to once again disengage.