After Sadaie KIRA and Mitsuie KIRA; father and son in the early period of the Tojokira clan left for Oshu (Northern Honshu), Tojo's territory became the territory of the Saijokira clan which was a Soryo (government) family and Mitsuyoshi KIRA seized the Tojo-jo Castle.
前期東条吉良氏（奥州・武蔵吉良氏）の吉良貞家・吉良満家父子が奥州に去った後、東条の地は惣領家である西条吉良氏のものとなり、吉良満義が東条城を接収した。