Editing Yamanashi Prefecture (section)

===15th to 19th centuries===
Among the many Kaigenji generations, those of the [[Takeda family|Takeda]], Ogasawara, and Nanbu families were particularly prosperous. During the [[Sengoku period]] of the 16th century, [[Takeda Shingen]] attained the status of [[daimyō]] and built Tsuzuji Mansion and the Yōgai Castle in Kōfu. From this base, he attempted to unify and control Japan.

After Takeda's death in 1582, Kai-no-Kuni came under the control of the [[Oda clan|Oda]] and [[Toyotomi]] clans before being subsumed into the [[Tokugawa shogunate]] during the [[Edo period]]. Beneath the Edo shogunate, the Kōfu clan (based in Kuninaka, or Central and Western Yamanashi) and the Yamura clan (based in Gunnai, or Eastern Yamanashi) were formed, but in 1724 the area came under the direct control of the Shogunate. With the development of the [[Japan National Route 20|Kōshū Kaidō]] (highway) and [[Fuji River]] transport, goods, materials and culture flowed into the region.

By the mid-19th century, the contradictions of military government and clan system caused stability to erode and resistance to erupt across Japan, paving the way for the [[Meiji Restoration]] of 1868.