New Addition to the Popular 'Oomori! Summer Vacation Drill' Series for Elementary Students: 'Eiken® Grade 4' and 'Eiken® Grade 5' to Be Released on June 16, 2026

Obunsha Co., Ltd. (Shinjuku-ku, Tokyo / President and CEO: Hideki Kumikawa), a leading educational publisher, announces the release of two new titles in its popular 'Oomori! Summer Vacation Drill' series for elementary students: 'Oomori! Summer Vacation Drill Eiken® Grade 4' and 'Oomori! Summer Vacation Drill Eiken® Grade 5,' scheduled for publication on June 16, 2026.

● About the 'Oomori! Summer Vacation Drill' Series

This series is designed to help elementary students develop a consistent daily study habit during summer vacation without feeling overwhelmed—making it the ideal summer learning workbook.

Responding to recent changes in English learning environments for elementary students, the series now expands to include two new titles focused on preparing for the Eiken® Grade 4 and Grade 5 exams. These workbooks are packed with engaging features that allow children to enjoyably and effectively prepare for exams during their extended summer break.

● Comprehensive Preparation with '2 Pages a Day × 31 Days'!

Table of Contents: 'Oomori! Summer Vacation Drill Eiken® Grade 4' | 'Oomori! Summer Vacation Drill Eiken® Grade 5'

Structured as '2 pages per day × 31 days,' these workbooks enable students to prepare for Grades 4 and 5 systematically and stress-free over the summer. Each book includes sections on 'Grade 5 Review,' 'Grammar,' 'Vocabulary, Phrases, and Conversations,' 'Reading Comprehension,' 'Listening,' and 'Final Review,' helping students build comprehensive English skills. (Note: 'Grade 5 Review' and 'Reading Comprehension' sections are included only in the Grade 4 edition.)

● Student-Friendly Step-by-Step Learning Design

Sample Page: 'Oomori! Summer Vacation Drill Eiken® Grade 5'

The workbook follows a 3-step approach: read 'Today’s Key Point,' solve fun quizzes, then tackle practice questions in the exact format of the actual Eiken exam. This structure allows even first-time test-takers to steadily build confidence and ability without stress.

● Full-Color Design with Furigana Support

Sample Page: 'Oomori! Summer Vacation Drill Eiken® Grade 5'

All kanji characters include furigana (phonetic readings), enabling students to read and progress independently even if they haven’t learned certain kanji yet. The main workbook is printed in full color with abundant illustrations, ensuring visual engagement and sustained motivation from start to finish.

● Motivational Bonus Features!

'Learning Calendar': Helps manage not only the workbook’s study plan but also school homework and summer schedules—all on one sheet.

'Drill Achievement Stickers': Students can place a sticker each day after completing their drill, boosting motivation and tracking progress. Completing all stickers reveals a cute picture.

'Review Poster': Summarizes essential grammar points and key concepts for quick reference.

● Compatible with Official Listening App 'Eigo no Tomo'

The audio for this workbook is available through Obunsha’s official listening app, 'Eigo no Tomo' (https://eigonotomo.com/). Users can easily access high-quality listening audio on smartphones or tablets.

Obunsha’s Official App 'Eigo no Tomo'

https://eigonotomo.com/

'Eigo no Tomo' is Obunsha’s official app that provides audio for its English test preparation books, including Eiken®, TOEIC® L&R, TOEFL iBT®, and TEAP. Replacing traditional methods like CDs or downloadable files, this app offers a modern, convenient listening study solution. Over 300 Obunsha titles are now supported.

※ Eiken® is a registered trademark of The Japan English Language Testing Association.

※ This content has not been approved, endorsed, or otherwise reviewed by The Japan English Language Testing Association.

※ TOEIC® is a registered trademark of ETS. This product is not endorsed or approved by ETS.

※ TOEFL® is a registered trademark of ETS. This product is not endorsed or approved by ETS.

For details on the promotional campaign, visit:

https://www.obunsha.co.jp/pr/natsudori3/cp2026

Book Details

'Oomori! Summer Vacation Drill Eiken® Grade 4'

・Editor: Obunsha

・Release Date: June 16, 2026

・Price: 990 JPY (tax included)

・ISBN: 9784010116081

・Format: Main book A4 size / 64 pages / full color; Supplement B5 size / 32 pages / 2-color print

・Included Items: Learning calendar, drill achievement stickers, Eiken Grade 4 review poster

・URL: https://www.obunsha.co.jp/product/detail/011608

'Oomori! Summer Vacation Drill Eiken® Grade 5'

・Editor: Obunsha

・Release Date: June 16, 2026

・Price: 990 JPY (tax included)

・ISBN: 9784010116098

・Format: Main book A4 size / 64 pages / full color; Supplement B5 size / 24 pages / 2-color print

・Included Items: Learning calendar, drill achievement stickers, Eiken Grade 5 review poster

・URL: https://www.obunsha.co.jp/product/detail/011609

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URL: https://www.obunsha.co.jp/