Keiichiro Taniuchi

J-STAR Co. Ltd. (J-STAR) is a private equity arm of J-STAR Partner and is headquartered in Tokyo, Japan. The firm was founded in 2006.

TSS Co. Ltd. designs, develops and manufactures printed circuit boards used for power electronics, automobile, and LED lighting. Its products include general and special printed circuit board, Chips on Board (COB) type custom lighting emitting diode (LED), and LED lighting for growing plants. The company was founded on January 27, 2009 and is headquartered in Sagamihara, Japan.

Sanwa Service Group is a Japanese company that provides car dealership services. The company is based in Kiyosu, Japan. The company was founded in 2001.

Irohanihoheto Co. Ltd. operates as a holding company which provides the restaurant services through its subsidiaries. It developed various unique restaurants brands such as Echigoya, the charcoal-grilled dried-fish izakaya-restaurants, Shinpachi Shokudo, the fast-casual restaurants which provide charcoal-grilled dried fish, Yamatoya, the fresh-fish restaurants, Jiromaru, the standing-style yakiniku (Korean BBQ) restaurants, and POTA PASTA, the homemade pasta restaurants. The company is headquartered in Tokyo, Japan.

The Kinokuni Shinkin Bank provides commercial banking services. Its products and services include personal, corporate, foreign, and time deposits; tax reserves; notes receivables; securities investment; domestic and foreign exchanges; bonds, trust, and fund management; loans and securities lending; property and casualty insurance; and others. The firm also operates automated teller machines, and offers internet and telephone banking services. The company was founded on August 23, 1911 and is headquartered in Wakayama, Japan.