Pre-orders Begin for 'Wakaranai o Wakaru ni Kaeru High School Entrance Exam: 5 Subjects'

Bunri Co., Ltd. (Tokyo, Shinagawa / President and Representative Director: Yoshikazu Tago), a group company of Gakken Holdings Co., Ltd. (Tokyo, Shinagawa / President and Representative Director: Hiroaki Miyahara), began accepting pre-orders for 'Wakaranai o Wakaru ni Kaeru High School Entrance Exam: 5 Subjects' (scheduled for release on July 10, 2026) at online bookstores from Tuesday, May 26, 2026.

This is a new addition to the popular 'Wakaranai o Wakaru ni Kaeru High School Entrance Exam' series (5 individual subject books), known for its 'thorough understanding from the basics.' The book is designed to be approachable for junior high school students who worry that they have never completed a single workbook.

■ Key Point Summaries and Practice Problems
The book is structured with each unit spanning two pages. Students can proceed by first reviewing important points in the 'Key Point Summary' and then checking their understanding through problem-solving. The 'Key Point Summary' uses diagrams and illustrations to explain key learning points clearly. Supplementary columns like 'This is Important' and 'Watch Out for Mistakes' provide additional explanations. In the 'Practice Problems' section, students can first check key points and terms with the 'Passing Ability Check.' Some practice problems are taken from actual entrance exams. Classic, must-know problems are marked for easy identification.

■ Summary Tests and Special Feature Pages
Each subject concludes with a one-page 'Summary Test' featuring practical problems, including some from actual exams. English and Science include 'Special Feature Pages' that organize frequently tested problems by format.

■ Answers and Explanations
The separate answer booklet includes not only answers and explanations but also the problems themselves, making it easy to check answers and review mistakes. A 'Plus One' column is also included to help boost scores.

■ Schedule App
As a special bonus, the 'Wakaranai o Wakaru ni Kaeru High School Entrance Exam: 5 Subjects' includes a schedule app (not included with the individual subject books). This app helps create study plans, which are crucial for completing the workbook. By simply selecting the workbook, entering the 'period,' 'effort level,' and 'scope,' a study plan is generated. If the plan falls behind, it can be restructured. Users can also input their achievement level, which helps maintain motivation.

■ Product Overview
'Wakaranai o Wakaru ni Kaeru High School Entrance Exam: 5 Subjects'
Price: 1,320 yen (tax included)
Scheduled Release Date: Friday, July 10, 2026
Format: B5
Pages: 176
ISBN: 978-4-581-11171-3
Publisher: Bunri Co., Ltd.
Digital Version: Available
Purchase/Reservations: Available at bookstores and online bookstores nationwide.

■ About Bunri
Founded in 1950, Bunri is an educational publisher. With the motto 'Creating 'I See!',' it produces learning content, including textbooks-aligned materials. Its main business includes publishing and selling commercial study guides, materials for cram schools, and textbooks for schools, as well as assessment and digital content businesses. While primarily focused on elementary and junior high school students, it has recently expanded to include preschoolers, high school students, and adult learners, developing materials that create 'I See!' moments for everyone.

■ About Gakken Holdings Co., Ltd.
Founded in 1946, Gakken Holdings is a holding company operating in the education and healthcare/welfare sectors. In education, it runs classroom and cram school businesses like 'Gakken Classroom,' publishes learning materials such as 'Science' and 'Learning,' and provides textbooks and childcare supplies for schools. In healthcare and welfare, it operates serviced housing for the elderly, group homes for dementia patients, and childcare support businesses like nursery schools and after-school clubs. It operates in over 150 countries globally. In November 2023, it set a new aspiration 'To become a company that relentlessly pursues human potential,' aiming to support the curiosity and challenges of people of all ages, from children to seniors. Its revenue for the fiscal year ending September 2025 was 199.1 billion yen, with 82 consolidated subsidiaries. It is listed on the Prime Market of the Tokyo Stock Exchange (Securities Code: 9470).