Born in Nagaoka City, Niigata Prefecture in 1973. After joining the Kasama ware kiln Mukoyama-gama in 1997, he was recognized as a Kasama Ware Traditional Craftsman in 2010. He became independent in 2016, establishing the Toko-bo Kobayashi studio in Shimogo, Kasama City, Ibaraki Prefecture, and was designated an Ibaraki Prefecture Traditional Craftsman in 2020. Working primarily in porcelain clay, he produces lightweight, practical everyday tableware, including a series of celadon-white porcelain pieces with shinogi carving and the "Tetsu-juso Series," featuring hand-painted striped patterns on each individual piece.