

For five centuries, the city was fought over by the Lion Clan and the Crane Clan. However, a subsequent Lion offensive in the year 601, directed at the Kintani Valley, was driven back by the Crane.

The next Crane assault, in the year 600, failed, with the Crane suffering heavy losses. The Lionīegan fortifying the city heavily.

In 598 the city was assaulted by the Crane who held it for eight days. The fortified keep and a series of outbuildings were recorded with the name of Toshi Ranbo in the Imperial Histories, while the Ikoma Histories made reference to Kita no Yosa, Northern Fortress. It was intended as headquarters to coordinate the Akodo military efforts against the Crane. In 437 the Akodo family created Toshi Ranbo as the northernmost holding along the shared Lion- Crane border, near the Kintani Valley.
