Sharing a New Model of Learning from Shibuya through Special AI Classes, PBL, and Company-School Co-Creation

MIXI, Inc. (Shibuya, Tokyo; President and Representative Director, Senior Corporate Officer, and CEO: Koki Kimura) and RePlayce Inc. (Shibuya, Tokyo; Representative Director and CEO: Masahiro Yamamoto), which provides career exploration services for junior high and high school students, have signed a naming rights agreement for the Shibuya campus of HR High School, a support school for correspondence high school students operated by RePlayce. The campus opened on Monday, April 20, 2026, under the name HR High School SHIBUYA MIXI BASE.

Through this partnership, the two companies will launch the “Let’s Build a Campus” project, an initiative that brings companies into school management in a meaningful way. Through special AI classes and PBL (project-based learning), they will promote a new model of learning co-created by companies and schools from Shibuya.

■Background of the Partnership

Guided by its User surprise first principle and the values of Innovation, Passion, and Integrity, MIXI operates businesses that create richer communication. In recent years, the company has put a company-wide structure in place to embed generative AI as part of its business infrastructure, improving the quality and speed of day-to-day work while creating new forms of experiential value in the communication domain. To drive further business growth and value creation, MIXI recognized the need to welcome more people who share its vision and will take on new challenges together, and began exploring how to expand opportunities to connect and learn with the next generation that will shape the future of society and industry.

Since opening HR High School, the support school for correspondence high school students it operates, RePlayce has pursued an environment where each student can grow proactively while staying connected to society, guided by the keywords exploration, crossing boundaries, and co-creation.

With this shared vision, MIXI and RePlayce have jointly run a corporate problem-solving program, or corporate PBL, as part of HR High School’s inquiry-based curriculum since 2025. Over the course of roughly six months of PBL classes, students refined their ideas around the theme of creating new businesses and presented the results at a final presentation, creating a practical setting where learning connects directly to society.

Building on the strong results of this collaboration, the two companies agreed to take the initiative further and continue building an environment where students can actively engage with questions that have no single right answer and develop the ability to create new value.

At SHIBUYA MIXI BASE, the Shibuya campus of HR High School newly opened this spring through the partnership between the two companies, students will be offered learning opportunities that go beyond the standard curriculum and draw on MIXI’s practical expertise in product development and the use of AI cultivated across its diverse businesses. These opportunities will help this AI-native generation build the practical skills they need to thrive in a digital society.

Through special classes led by MIXI employees, corporate PBL programs, and specialized seminars, we will create an environment where students can gain skills they can apply in society. In doing so, we will offer them a wider range of options for the future beyond higher education and employment alone, and support the challenges taken on by the people who will shape the future.

■Comments from Both Companies

■Overview of HR High School SHIBUYA MIXI BASE

HR High School SHIBUYA MIXI BASE is HR High School’s Shibuya campus, located in the NX Shibuya Building, a seven-minute walk from Shibuya Station.

HR High School is a support school for correspondence high school students that opened in April 2025 with YOYOGI BASE in Yoyogi as its home campus. It has developed a diverse curriculum that includes dialogue with more than 100 working professionals and other adults, mission-based projects in collaboration with some of Japan’s leading companies, and next-generation liberal arts.

To mark the opening of the Shibuya campus, we are launching the “Let’s Build a Campus” Project through a naming rights partnership with MIXI, creating a model in which companies are deeply involved in the operation of educational settings. In Shibuya, we will co-create an entirely new place for education where learning and community come together.

Location: Shibuya, Tokyo (NX Shibuya Building, a seven-minute walk from Shibuya Station)
Opening: April 20, 2026
Operator: RePlayce Co., Ltd.
Naming Rights Partnership: MIXI, Inc.
https://hr-highschool.com

■Main Educational Programs

Through this partnership, the following programs will be offered at “HR High School SHIBUYA MIXI BASE.”

Top Runner Session	Interactive sessions featuring leading professionals from a range of industries, including MIXI. Held regularly, these sessions give students opportunities to engage with working professionals and gain real insight into their perspectives on work and values.
Company-Collaboration PBL Program + Special AI Seminar	In this company-collaboration PBL program, students work in teams to explore and propose solutions to business challenges set by MIXI. In addition, they take part in a year-round seminar led by MIXI, where they build structured knowledge of AI, entertainment, technology, and related fields.
“Let’s Build a Campus” Project	This participatory project, jointly led by MIXI and HR High School, brings students, businesses, and the local community together to help shape the school itself. In partnership with the Shibuya City Board of Education, the initiative also envisions expanding to local junior high schools and other settings in the community. It will continue to provide opportunities for learning to connect with the real world through experiences such as invitations to participate in the Digital School Festival Grand Prix, organized by the Digital Human Resources Consortium with MIXI also participating as a partner, and video appearances by MIXI employees in content produced by HR High School.

■Company Overview

MIXI, Inc.

Guided by its Purpose of enriching communication and inspiring moments of joy, MIXI provides communication services that friends and families can enjoy together, including mixi, MONSTER STRIKE, FamilyAlbum, and TIPSTAR. Since fiscal 2019, the company has supported the Kids VALLEY Future Learning Project, which promotes programming education in Shibuya City public elementary and junior high schools, and since 2022 it has also supported the Shibuya Extracurricular Activities Reform Project. MIXI also continues to invest in developing the next generation of talent.

Founded: June 3, 1999
Representative: Koki Kimura, President and Representative Director, Senior Corporate Officer, and CEO
Address: 36F, Shibuya Scramble Square, 2-24-12 Shibuya, Shibuya-ku, Tokyo
Official Website: https://mixi.co.jp/

RePlayce Inc.

Founded in April 2024 as a spinout from NTT DOCOMO, Inc.’s career exploration service for junior high and high school students, Hataraku-bu. In 2025, the company opened HR High School and, with the mission of “updating the way education works today,” is working to spark curiosity in younger generations, support children’s self-realization, and develop the talent that will support Japan’s future. In December 2025, Hataraku-bu was rebranded and relaunched as TANQ BASE.

Headquarters: Shibuya-ku, Tokyo
Representative Director and CEO: Masahiro Yamamoto
Business: Operation of “TANQ BASE,” an online career exploration school for junior high and high school students; operation of HR High School, a support school for correspondence high schools; development of inquiry-based learning materials; dispatch of working professional instructors; operation of online school businesses; etc.
Mission: “Updating the way education works today”
Official website: https://replayce.co.jp
• A new type of support school for correspondence education, opening in spring 2025: https://hr-highschool.com
• “TANQ BASE,” an online career exploration school for junior high and high school students: https://tanqbase.com
* From December 2025, “Hataraku-bu” was rebranded and relaunched as “TANQ BASE.”