Asa
Asa lies on the San'yōdō in western Nagato, where the Asa River waters the surrounding fields. After the Battle of Sekigahara, a branch of the Mōri family established its residence here, and the town prospered as a post station. An irrigation weir and channels transformed the land known as Senjōgahara into rice fields. Local tradition credits the work to Netarō, a legendary sleeper whose story became attached to the waterworks during the Edo period.