The Kikuchi clan became a retainer of the Taira family, however, when MINAMOTO no Yoritomo raised an army, the following sixth head, Takanao KIKUCHI opened up the Yowa War against the Taira family.
菊池氏は平家の家人と化したが、源頼朝が兵を挙げると翌6代菊池隆直は養和の乱を起こして平家に反抗した。