"Super Easy to Understand!" Classes Now Available for Limited-Time Unlimited Viewing! Gakken's "Mubista" Study Reference Book Series Celebrates 600,000 Copies Sold with a Special Campaign
Gakken is offering unlimited free viewing of all class videos for selected "Mubista" series books from April 1st to April 30th, 2026, to commemorate 600,000 copies sold.
📋 Article Processing Timeline
- 📰 Published: April 1, 2026 at 19:00
Gakken Inc. (Shinagawa, Tokyo / President and Representative Director: Tatsuya Nanjo), a group company of GAKKEN HOLDINGS CO., LTD. (Shinagawa, Tokyo / President and Representative Director: Hiroaki Miyahara), will be holding a limited-time unlimited video viewing campaign from April 1st to April 30th, 2026, to commemorate the "Mubista" series surpassing a cumulative total of 600,000 copies sold.
◆ The Best of Both Worlds: "Reference Books × Class Videos"! The Highly Acclaimed "Mubista" Series Finally Surpasses 600,000 Copies Sold!
This series allows students to quickly master the necessary studies for exam preparation from home, with "super" interesting and easy-to-understand "divine classes" by popular instructors covering all chapters.
Launched in 2022, approximately four years ago.
It has surpassed a cumulative total of 600,000 copies sold at an unprecedented speed for a reference book series.
The series, which began with "University Entrance Exam Mubista: Hachisawa's Classical Grammar in Just 6 Hours," has now expanded to 6 subjects (Japanese Language, English, Social Studies, Science, Information, Essay Writing) and a total of 22 titles.
With the addition of "Good Question Training" for entrance exam level practice problems, the product lineup is comprehensive and usable by both humanities and science students.
Furthermore, due to its great popularity, the series has expanded beyond university entrance exam preparation to include:
・"Eiken®" series
・"TOEIC®" series
These can also be used according to your target grade/score.
For any subject, you can master the essential elements for passing the exam in just a few hours, allowing even busy individuals to acquire knowledge quickly.
◆ For a Limited Time Only! Highly Acclaimed Videos Available for Free Unlimited Viewing!
The most significant feature of this series is the class videos by charismatic instructors.
Responding to voices such as:
"I'm curious about the content."
"I want to check it out before buying."
"Maybe I'll just watch a bit of the difficult areas..."
Now, for a limited time, you can watch them all for free!
All videos for the eligible books can be viewed for a one-month limited period.
【Eligible Books】
・"University Entrance Exam Mubista" series (※Excluding "Good Question Training" series)
・"Eiken® Mubista" series
・"TOEIC® Mubista" series
【Campaign Period】
Wednesday, April 1, 2026 – Thursday, April 30, 2026
※The period may be subject to change without prior notice.
You can access the campaign page from the Mubista series special website.
Don't miss this opportunity to experience the divine classes that have led many students to success in their exams!
＼Click here to access the campaign page!／
▶"Mubista Series Special Website":https://gakken-ep.jp/extra/mubisuta_series/
※Click the banner titled "Limited-time Unlimited Video Viewing Campaign Page Here" at the top of the site to open the campaign page.
■Gakken Inc.
https://www.corp-gakken.co.jp/
・President and Representative Director: Tatsuya Nanjo
・Date of Establishment: January 13, 2009 (Trade name changed on October 1, 2022)
・Capital: 50 million yen
・Location: 2-11-8 Nishi-Gotanda, Shinagawa-ku, Tokyo 141-8416
・Business Activities: Engaged in publishing and content business, global business, medical and nursing publishing content business, kindergarten and school business, classroom-related business, EC and online business, and advertising business.
■GAKKEN HOLDINGS CO., LTD.
https://www.gakken.co.jp/
・President and Representative Director: Hiroaki Miyahara
・Date of Establishment: March 31, 1947
・Capital: 19,817 million yen
・Sales: 199.1 billion yen, Consolidated Subsidiaries: 82 companies (as of September 2025 fiscal year)
Listed on the Prime Market of the Tokyo Stock Exchange (Securities Code: 9470)
・Location: 2-11-8 Nishi-Gotanda, Shinagawa-ku, Tokyo 141-8510
・Phone: 03-6431-1001 (Main)
・Business Activities: A holding company established in 1946, engaged in education and medical/welfare related businesses.
Education Sector: Classroom and cram school businesses including "Gakken Classroom," publishing and content businesses such as learning materials, kindergarten and school businesses including textbooks and childcare supplies, etc.
Medical and Welfare Sector: Service-oriented housing for seniors, dementia group home businesses, childcare support businesses such as nurseries and after-school care, etc.
Global: Activities and business development in over 150 countries.
FAQ
What is the Mubista series?
It is a Gakken study reference book series that combines popular instructors' class videos with textbooks, allowing for efficient learning in a short period.
How long does the free viewing campaign last?
The campaign is for a limited period, from Wednesday, April 1, 2026, to Thursday, April 30, 2026.
Which series' videos are available for free viewing?
The University Entrance Exam Mubista series (excluding the 'Good Question Training' series), Eiken® Mubista series, and TOEIC® Mubista series are eligible.