Tsunetaka might have tried to avoid difficulties of surviving in Kanto region as a small gokenin (an immediate vassal of the shogunate in the Kamakura and Muromachi through Edo periods), under a direct influence of the central government.
中央情勢に左右されやすく、また弱小の御家人では関東近隣での生き残りが難しいと考えたためと推測される。