Sadahiko Makishima

Watahan Mihara Shoten Co., Ltd. engages in the manufacture, retail and wholesale of tea and confectionery. The company was founded in 1874 and is headquartered in Azumino, Japan.

Part of Watahan & Co., Ltd., Watahan Partners KK is a transportation and Japanese distribution services company. The company is based in Tokyo, Japan and was founded in 2017.

Founded in 1926, Taiyo Co. Ltd. (Shizuoka) is a furniture manufacturer based in Shimada, Japan. Part of Watahan & Co., Ltd., the Japanese company specializes in manufacturing and wholesale of storage furniture, including semi-order products, and OEM production of various furniture and store fixtures. Taiyo Co. Ltd. (Shizuoka was acquired by Watahan Partners KK on March 23, 2021.

Rigna Co. engages in the operation and original product development of furniture and interior miscellaneous goods for showrooms; and management of online shops. It also provides the designing direction for specialty stores and offices, interior designing, interior coordination for living spaces, operation of lifestyle proposal type accessory shops and others. The company was founded on May 8, 2003 and is headquartered, in Tokyo, Japan.