When he was appointed as a member of Goryo-eji, he made an agreement with Kondo (Isami KONDO), that there would not be any more Shinsengumi members that would be allowed to leave the Shinsengumi.
御陵衛士拝命時における近藤との取り決めとして、新選組からの後続の脱退は許さないとしていた。