Hiroyuki Yamamoto

Eikoh Inc. engages in the education business. It manages cram schools and offers professional teaching in language and specialized education. The company was founded in July 1980 and is headquartered in Tokyo, Japan.

Eikoh Holdings, Inc. engages in the management of the group companies educational business. It operates through the following segments: Education, Education Solutions, and Others. The Education segment handles the language and cram schools, franchise, and classroom administration services. The Education Solutions segment deals with education content, temporary staff networks, test materials for private institutions, and language teaching. The Others segment handles the material printing, educational services, and business review and restructuring promotions. The company was founded on October 3, 2011 and is headquartered in Tokyo, Japan.

Z-Kai Holdings, Inc. manages its group of companies that engage in the operation of educational schools. The company was founded in May 2015 and is headquartered in Mishima, Japan.