The reasons why he did not return to Suruga and fled to Kyoto after losing the Nagoya-jo Castle and why he did not take part in the Hanakura War, a succession dispute in the Imagawa family are unknown.
那古野城を奪われた後、駿河に帰らず京に逃れた理由は不明で、今川家の家督争いの花倉の乱にも関与していない。