Stamen Co., Ltd. engages in the development and provision of workforce engagement management platform 'TUNAG'. It also operates and manages online fan salons under the name FANTS, which is a one-stop service that provides the systems, platforms, plans, and know-how required for the opening and operation of subscription-type online fan salons by encouraging exchanges and activities between fans, rather than single-shot communication such as throwing money and crowd funding, and others. The company was founded by Atsushi Kato on January 29, 2016 and is headquartered in Tokyo, Japan.