・Hakuko-san was born as the daughter of Ono Kozan who was the founder of the Kozan kiln.
・She entered the Kozan kiln and learned making porcelain.
・Kato Hajime was the master of making underglazed gold ceramic, it made a great impact on Hakuko-san when she first met the one.
・Continued to make works on a trial basis, she acquired stable and perfect performance at last.
・She was recognized as the holder of Saga Prefecture Important Intangible Cultural Asset Ceramics, yurikinsai in 1996.