Even the association of the Kanto Samurai Group, the gathered troops under Yoritomo's command with the common purpose of defeating Heishi Iebito (server of Taira clan), originally had an adversarial relationship with Yoritomo over shoryo (territory), and their solidarity began to erode as the opposing forces were eliminated or dismissed.
平氏家人打倒を共通の目的として頼朝麾下に集結した関東武士団連合も、本来的には所領をめぐり潜在的な対立関係にあったのであり、敵対勢力の排除や淘汰にともなって徐々に結合が弱まり始めていた。