In July 1866, he was ordered to inspect Choshu (Nagato Province) and Boshu (Suo Province) and did a very good job as an inspector, but after a while he lost contact and became missing (probably he was killed), and Masashi INUI, the second son of Taisuke ITAGAKI, was selected as the inheritor of succeeding to the INUI family because he had no heir.
1866年（慶応2年）6月に長防探索用を命ぜられ探索方として活躍するが、その後消息不明（おそらく死亡）となり、無嗣子ゆえ止むを得ず板垣退助の次男乾正士を後嗣として家を継がしめた。