Z-kai Group and Arcterus Co., Ltd. form a capital and business alliance

November 22, 2016
Zoshinkai Publishers Inc.

November 22, 2016 – Zoshinkai Publishers Inc (Headquarters : Sunto-gun, Shizuoka, Japan; CEO Takaaki Fujii: below, “Zoshinkai”), the holding company of Z-kai Group, announces that the company has agreed to the allocation of new shares to a third party by Arcterus Co., Ltd. (Headquarters: Ota-ku, Tokyo; CEO Goichiro Arai: below, “Arcterus”) and that Z-kai Inc., the operating company of Zoshinkai, and Arcterus have formed a business alliance for the creation and provision of a new ICT (Information, Communication and Technology) -based educational service.

The two companies will continue to discuss and collaborate in services including an online Note-sharing service, taking the view that the development of ICT-based high-quality and value-added services will enhance customer satisfaction.


With the rapid spread of smartphones and tablets and improvement in information technology, it is expected that the use of smartphones and tablets in education will become more widespread. In light of this, educational companies are focusing on improving services and creating added value for their customers through the integration of ICT into their services.

The Z-kai Group aims to bring new value and transformative change for total customer satisfaction through the provision of ICT-based high-quality, value-added educational services.

Standing and strengths of the companies

The Z-kai Group offers a wide variety of educational services, including correspondence courses, cram-schools, publications, mock examinations, assessment and ICT-based tutoring services, aimed at students ranging from kindergarten children to adults. The group delivers these services in line with the corporate philosophy “excellence in education for future global leaders” through Z-kai Inc., Z-kai Educe Inc. Z-kai CA Inc., and other subsidiaries.

Arcterus offers the learning experience most appropriate to each student, through the use of Big Data technologies, adaptive learning theory and knowledge gained from the front line of teaching. Of these, the Note-sharing App “Clear” offers students an enjoyable and effective learning experience in which they can make their study notes public and learn through the sharing of a wide variety of notes in their field of study. Arcterus is one of the foremost educational App companies in Japan, with more than one million subscribers.

Anticipated outcome of the alliance

As described above, the Z-kai Group offers a wide variety of educational services. In order to improve services, particularly in the field of correspondence education, the need has arisen to establish a system to strengthen connections between learners, to maintain their motivation for learning and help them improve still more.

It is expected that, by bringing together the educational services / learning content of Z-kai Group and the social learning services of Arcterus, this alliance will help forge connections between learners and improve their motivation for learning. In addition, the two companies will work together on developing more effective programs for learners in order to be able to offer services that will set us apart from our competitors.

Nature of Business (projected)

  • The development and provision of new services that combine the educational services of Z-kai and the social learning services of Arcterus.
  • The provision of additional content aimed at junior/senior high school and test-prep students via the Note-sharing App “Clear”.
  • The promotion of the Note-sharing App “Clear” to Z-kai customers.

*Services are expected to start in summer 2017.

About Arcterus Co., Ltd.

  1. Company name: Arcterus Co., Ltd.
  2. Address: 2-9-1, Higashi-Yukigaya, Ota-ku, Tokyo 145-0065
  3. President & Representative Director: Goichiro Arai, CEO
  4. Established: October 5th, 2010
  5. Business: Note-sharing platform “Clear”, Adaptive learning tool “CAIZ”

Press Contact:

◆Zoshinkai Publishers Inc.
Tel: 055-976-5568 (hours: 9am-5:30pm)

◆Z-kai Inc.
Tel: 055-976-8947 (hours: 9am-5:30pm)

◆Arcterus Co., Ltd.

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