The Kawasoe family, the ancestors of the Kosen Kiln, were craftsmen who mainly worked on figurines and glaze research. The skills were passed down from generation to generation, and in 1963, Tameo, the grandfather of the current owner, founded Kosen Kiln. 

In an effort to make Nabeshima celadon known to the world, he dedicated himself to researching its glazes. At that time, it was so difficult to make celadon porcelain that it was said that firing celadon porcelain would ruin the business. Nonetheless, after more than 10 years of hard work and dedication, his research was completed.

Takahiko Kawasoe is the third generation to preserve the legacy of Nabeshima ware that takes its origin in Okawachiyama. This village has been treasured as the "hidden kiln village" since the Edo period, and he wishes to maintain its culture for centuries to come. In order to do so, he has started research and development of celadon porcelain for the first time in 56 years, while preserving the tradition of Nabeshima ware techniques, but from a new perspective different from his grandfather's.