Placed in power, Yoshito vowed revenge for his mother and brother's death, and ordered Soun, an official in the Bakufu with a castle near Chachamaru's residence, to carry out the attack.
権力の座に就いた義遐は母と兄の敵討ちを幕府官僚の経歴を持ち、茶々丸の近隣に城を持つ早雲へ命じた。