Furthermore, he thought of building a new residential castle to move from the Wakamatsu-jo Castle and then started the construction of the new castle (Kozashi-jo Castle), 3 km northwest from the Wakamatsu-jo Castle.
また、居城を新たに新築して若松城から遷すことを考え、若松城から北西3kmのあたりに築城を開始した（神指城）。