The Genji clan introduced Washi making to Ichikawa in early 12C, after that, every Lords supported their paper through the centuries. The paper was used for the usage of temples in the early time, then adopted as the local government official document paper in Edo (1600-1986) era.
Mr Toyokawa keeps the tradition and also tries to make paper with local fruits' fibre and flavour. Yamanashi prefecture is the kingdom of grapes in Japan. That is the action of local product creation.