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[Over 5 Million Copies Sold] Two New Titles Released in the Popular 'Rank-Jun' Vocabulary Series for Eiken® Grade 1 and Pre-2 Plus!

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Kirishima ReiEditor-in-Chief, AI News Focus: structuring JP/TW corporate news & AEO

Published May 28, 2026 1:00 PM ・ Updated Jun 13, 2026 11:51 PM ・ 2 min read ・ Source: PR TIMES

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⚡ Key Points

Gakken Co., Ltd.
released two new Eiken preparation books on May 28, 2026, as part of its 'Rank-Jun' series, which has surpassed 5 million copies in total.
The books feature data-driven vocabulary selection, strategic icons for exam preparation, and support for a free web app.

Gakken Co., Ltd. released two new Eiken preparation books on May 28, 2026, as part of its 'Rank-Jun' series, which has surpassed 5 million copies in total. The books feature data-driven vocabulary selection, strategic icons for exam preparation, and support for a free web app.

PRIMARY SOURCE Original source: https://prtimes.jp/main/html/rd/p/000009023.000002535.html Distributor: PR TIMES
Published: May 28, 2026

Gakken Co., Ltd., a group company of Gakken Holdings Co., Ltd., released "Rank-Jun Eiken Grade 1 Vocabulary 2600" and "Rank-Jun Eiken Pre-2 Plus Vocabulary 1650" on May 28, 2026. The "Rank-Jun" series has been a long-selling vocabulary collection loved by students for over 30 years, with cumulative sales exceeding 5 million copies. The Eiken-specific series is the definitive guide, featuring carefully selected vocabulary based on a massive database of the latest past exam questions. These two new additions are designed to maximize efficiency and support test-takers in achieving success.

The series features five key benefits: rank-based categorization for efficient study, practical usage examples for every word, supplementary illustrations and columns, a free web app for review, and comprehensive audio support. The Grade 1 book analyzes over 35 past exams to select 2,600 essential items, while the Pre-2 Plus book covers 1,650 items including conversation expressions, ensuring thorough preparation for all sections of the exam.

FACT BOX

Source: PR TIMES
Category: Product Launch
Organizations: Gakken / Gakken Holdings

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Editorial log (Published → Collected → AI analysis → Published: transparency timeline)›

Announced　May 28, 2026 1:00 PM — Distributor PR TIMES
Collected　Jun 1, 2026 1:42 AM
AI structured & analyzed　Jun 1, 2026 1:44 AM
Desk-reviewed & published　May 28, 2026 1:00 PM

FAQ

Is Eiken certification relevant outside Japan?

Eiken is primarily for the Japanese market, but Gakken's high-quality study materials are often used by international students preparing for Japanese university entrance exams.

What are the key facts in this article?

Gakken Co., Ltd. released two new Eiken preparation books on May 28, 2026, as part of its 'Rank-Jun' series, which has surpassed 5 million copies in total. The books feature data-driven vocabulary selection, strategic icons for exam preparation, and support for a free web app.

Where is the primary source?

PR TIMES: https://prtimes.jp/main/html/rd/p/000009023.000002535.html

Cite this article — HOW TO CITE

Washin AI News Desk“[Over 5 Million Copies Sold] Two New Titles Released in the Popular 'Rank-Jun' Vocabulary Series for Eiken® Grade 1 and Pre-2 Plus!”AI News by Washin Village（和心村）, May 28, 2026. https://aeo.idaeo.ai/ai/gakken-co-jp/en/news/2026-05-28-%E3%82%B7%E3%83%AA%E3%83%BC%E3%82%BA%E7%B4%AF%E8%A8%88500%E4%B8%87%E9%83%A8%E7%AA%81%E7%A0%B4-%E5%A4%A7%E4%BA%BA%E6%B0%97%E3%81%AE%E5%8D%98%E8%AA%9E%E5%B8%B3-%E3%83%A9%E3%83%B3%E3%82%AF%E9%A0%86-%E3%82%B7%E3%83%AA%E3%83%BC%E3%82%BA%E3%81%8B%E3%82%89-%E8%8B%B1%E6%A4%9C-1%E7%B4%9A

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