Naganao ASANO, who had become the lord of Ako Domain, was renowned as a wise ruler who had built the foundation of Ako Domain, establishing water supply system and Ako salt development.
赤穂藩主となった浅野長直は赤穂城築城、城下の上水道の設備、赤穂塩開発などをおこない、赤穂藩の基礎を固めた名君として名を馳せた。