Minamoto no Yoshinaka
In 1181, Taira no Kiyomori died, and the Taira clan was now led by Taira no Munemori. Munemori took a much more aggressive policy against the Minamoto, and attacked Minamoto bases from Kyoto in the Genpei War. Nonetheless, Yoritomo was well protected in Kamakura. His brothers Minamoto no Yoshitsune and Minamoto no Noriyori defeated the Taira in several battles, but they could not stop Minamoto no Yoshinaka, Yoritomo's rival, from entering Kyoto in 1183 and chasing the Taira south. The Taira took Emperor Antoku with them. In 1184, Antoku was displaced by the Minamoto with Emperor Go-Toba as the new emperor.