大友氏
After the death of Mōri Motonari in 1571, "Mōri's Two Rivers" (Kobayakawa Takakage and Kikkawa Motoharu) became more important as assistants to Mōri Terumoto against the remnants of their enemies, the Ōtomo clan (大友氏), Amako clan (尼子氏), and Ōuchi clan (大内氏).