Although the modern city of Fuefuki was officially established as an administrative unit on October 12, 2004, through the merger of six towns, the history of these lands dates back to deep antiquity. The Isawa district, which became part of the city, played a key role in the region in the past, serving as the capital of the historical Kai Province before the rise of the neighboring city of Kofu. The city's name comes from the Fuefuki River: according to legend, it translates as "The Flute Player" and is associated either with a touching story of a mother searching for her son or with the sound of the wind resembling a melody.
The formation of settlements in this territory was driven by its strategically important location in the eastern part of the fertile Kofu Basin. The availability of water resources contributed to the early development of agriculture, while the passage of the historical Koshu Kaido road through the area stimulated trade and the influx of travelers. These lands are also closely linked to the origins of the powerful Takeda samurai clan: before moving to Kofu, the rulers' residence was located here, which provided the region with high political status.
Since ancient times, the region has developed not only as an agrarian but also as a spiritual center. In the Ichinomiya district lies the revered Shinto Asama Shrine (Kai-Ichinomiya), which served as the province's main religious site for centuries. Thanks to the unique climate and soils, the famous fruit-growing culture was born here, turning Fuefuki into Japan's "Peach Kingdom," while the hot springs became the foundation for the popular Isawa Onsen resort area.