Kōshū, another name for Kai Province.

Cinders and ash fell to earth as far away as Kai Province.

In 1593, together with his father, he was granted Fuchu, in Kai Province.

Some of the Akiyama moved from Kai Province to the island of Shikoku.

He was a retainer of the Takeda clan of Kai Province.

Kai Province was controlled by the powerful Takeda clan during the Sengoku period.

During the Heian period, Kai Province was created in this area.

Kōfu's name means "capital of Kai Province".

He entrusted the boy to the care of the Anayama of Kai Province.

In case of this town, it is the Sengen Shrine of the Kai Province.