Classes Receiving 'Incredibly Easy to Understand!' Praise Available for Unlimited Viewing for a Limited Time! Campaign Launched to Commemorate the "Mubista" Study Guide Series Surpassing 600,000 Copies in Total Circulation.

Gakken Co., Ltd. (Shinagawa, Tokyo / President and Representative Director: Tatsuya Nanjyo), a group company of Gakken Holdings Co., Ltd. (Shinagawa, Tokyo / President and Representative Director: Hiroaki Miyahara), will hold an unlimited video viewing campaign for a limited time from April 1 to April 30, 2026, to commemorate the "Mubista" series surpassing 600,000 copies in total circulation.

**Take the Best of Both Worlds: Study Guides × Lecture Videos! The Highly Acclaimed "Mubista" Series Finally Surpasses 600,000 Copies in Total Circulation!**

This series features 'incredibly interesting and easy-to-understand divine lectures' by popular instructors covering all chapters, enabling students to quickly master the learning necessary for exam preparation from home.

Launched in 2022, this series has achieved a cumulative circulation of over 600,000 copies in approximately four years, an unprecedented speed for study guides.

The series, which began with 'University Entrance Exam Mubista: Yamazawa's Classical Grammar in Just 6 Hours,' has now expanded to cover 6 subjects (Japanese, English, Social Studies, Science, Information, Essay Writing) with a total of 22 titles. The lineup also includes 'Excellent Questions Practice' for university entrance exam level problem-solving, offering a comprehensive range of products suitable for both humanities and science students.

Due to its immense popularity, the series has been expanded beyond university entrance exam preparation to include: * "Eiken®" series * "TOEIC®" series

These are now available to help you achieve your target grade or score. All subjects can be mastered in just a few hours, covering the essential elements needed to pass exams, allowing even busy individuals to quickly acquire knowledge.

**Now for a Limited Time! All Popular Videos Available for Unlimited Viewing!**

The most significant feature of this series is the lecture videos by charismatic instructors.

To address voices such as: * "I'm curious about the content." * "I want to check it out before buying." * "Maybe I'll just watch the part about my weak subject..."

We are now offering unlimited viewing for free for a limited period of one month, allowing you to watch all the videos for the applicable books.

**【Applicable Books】** * "University Entrance Exam Mubista" series (excluding the "Excellent Questions Practice" series) * "Eiken® Mubista" series * "TOEIC® Mubista" series

**【Campaign Period】** * Wednesday, April 1, 2026 – Thursday, April 30, 2026

(Note: Campaign period is subject to change without notice.)

You can access the campaign page from the special Mubista series website. Please take this opportunity to experience the divine lectures that have guided many students to success!

**＼Access the campaign page from here!／** ▶ "Mubista Series Special Website": https://gakken-ep.jp/extra/mubisuta_series/ (Please click the banner 'Limited Time Only: Free Unlimited Video Viewing Campaign Page Here' at the top of the site to open the campaign page.)

Gakken Co., Ltd. (Gakken Inc.) URL: https://www.corp-gakken.co.jp/ ・President and Representative Director: Tatsuya Nanjyo ・Date of Incorporation: January 13, 2009 (Name change on October 1, 2022) ・Capital: 50 million yen ・Address: 2-11-8 Nishi-Gotanda, Shinagawa-ku, Tokyo, 141-8416 ・Business Activities: Operates publishing/content business, global business, medical/nursing publication content business, school/kindergarten related business, classroom related business, EC/online business, and advertising business.

Gakken Holdings Co., Ltd. (GAKKEN HOLDINGS CO., LTD.) URL: https://www.gakken.co.jp/ ・President and Representative Director: Hiroaki Miyahara ・Date of Incorporation: March 31, 1947 ・Capital: 19,817 million yen ・Sales: 199.1 billion yen, Consolidated Subsidiaries: 82 companies (As of the fiscal year ending September 2025) Tokyo Stock Exchange Prime Market listed (Securities Code: 9470) ・Address: 2-11-8 Nishi-Gotanda, Shinagawa-ku, Tokyo, 141-8510 ・Phone: 03-6431-1001 (Main) ・Business Activities: A holding company engaged in education and medical/welfare-related businesses, founded in 1946. Education Field: Classroom/cram school business including "Gakken Classrooms," publishing/content business for textbooks and learning materials, school/kindergarten business for textbooks and childcare supplies, etc. Medical Welfare Field: Serviced housing for the elderly business, dementia group home business, childcare support business such as nursery schools and after-school care, etc. Global: Activities and business development in over 150 countries.