[New Release] “Kazu” joins the popular anime “Strongest King Encyclopedia” drill series! Fight hard to become the strongest king of numbers!
Gakken Holdings Co., Ltd. Press release: September 18, 2025 To Members of the Press [New Release] “Kazu” joins the popular anime “The Strongest King Encyclopedia” drill series! Fight hard to become the strongest king of kazu! Two “Number” drills from the anime “The Strongest King Encyclopedia: The Ultimate Tournament” are now on sale! Challenge yourself to battle alongside the strongest kings! Get excited about the sparkly stickers and ultimate board game! Gakken Holdings Co., Ltd. (Shinagawa, Tokyo / President and CEO: Hiroaki Miyahara), a group company of Gakken Holdings Co., Ltd. Gakken (Shinagawa, Tokyo; President and CEO: Tatsuya Nanjo) released the Anime Strongest King Encyclopedia x Drill (Toddler Edition) “Numbers for Ages 3-4” and “Numbers and Clocks for Ages 4-6” on Thursday, September 18, 2025.
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https://prcdn.freetls.fastly.net/release_image/2535/8154/2535-8154-924152bd8fb5bdb851c25164cfd57583-1730×1234.jpg ▲“Kazu 3-4 years old”
https://prcdn.freetls.fastly.net/release_image/2535/8154/2535-8154-ccaa282c9b278bea9fbd9a2df520fbf7-1920×1369.jpg ▲”Numbers and Clocks for Ages 4-6″ A design that immerses you in the world! Learn numbers with the strongest kings.
https://prcdn.freetls.fastly.net/release_image/2535/8154/2535-8154-bceb26b5011dfac3a5eaf2fae62dd6ce-1730×1234.jpg ▲”Numbers and Clocks for Ages 4-6″ Have fun reviewing with
connect-the-dots and mazes! 【2】Boost your motivation with sparkly fighting stickers!
https://prcdn.freetls.fastly.net/release_image/2535/8154/2535-8154-3dfc4e0b31c321547fda231413fdaa00-1200×857.jpg ▲There are 125 stickers in total for “Numbers Clock Ages 4-6”! If you work hard on one page, you’ll get a sparkling “Fighting Sticker”! It will boost your motivation and self-esteem. The sticker illustrations are exclusive to this drill! 【３】Lesson Level Appropriate to Age ◎ “Numbers, Ages 3-4” Learn numbers from 1 to 12. Try comparing numbers and decomposing simple numbers to hone your quantitative sense! ◎ “Numbers and Clocks for Ages 4-6” Learn numbers from 1 to 30 and how to read a clock. Build the foundations of calculation and time management skills! Perfect for preparing for school. 【4】Includes a playable battle board game and cards!
https://prcdn.freetls.fastly.net/release_image/2535/8154/2535-8154-e9b0ac2e8fbb1b75450c5c8874fca7e3-3900×2835.jpg ▲ “Kazu 3-4 Years Old” Ultimate Drop Battle At the end of the book, there’s a board game to play! “Numbers for Ages 3-4” lets you enjoy the “Strongest Drop Battle,” and “Numbers and Clocks for Ages 4-6” lets you enjoy the “Strongest Rock-Paper-Scissors Battle.” Image
URL: https://prcdn.freetls.fastly.net/release_image/2535/8154/2535-8154-a9edf9cd432b58d54256d5a47674ed05-3900×2757.jpg ▲ “Numbers and Clocks for Ages 4-6” Addition Cards “Numbers for ages 3-4” comes with “How many and how many cards,” while “Numbers Clock for ages 4-6” comes with “Addition cards”! Master the basics of addition while having fun guessing games like “How many are there in total?” and “What is 2 plus 1?” This drill immerses you in the world of “The Strongest King Encyclopedia,” fostering a thorough
understanding of number concepts while having fun. Along with the anime, enjoy all four volumes of the “The Strongest King Encyclopedia” drill series!
https://prcdn.freetls.fastly.net/release_image/2535/8154/2535-8154-dba436e6a57e397861f4984ee749de5f-1920×1357.jpg ★The anime “The Strongest King Encyclopedia ~The Ultimate Tournament~” is currently airing!! On “Strongest Island,” fierce tournaments are being held between fierce warriors of various species, including animals, insects, and dinosaurs, for the title of “Strongest King,” the strongest of the strongest. Who will take the title of “Strongest King”? Don’t take your eyes off the earth-shattering battle that will take place on “Strongest Island”! Airing every Sunday from 7:15 AM on TV Tokyo’s six affiliated stations! ★The Strongest King Encyclopedia Series is now on sale!!
https://prcdn.freetls.fastly.net/release_image/2535/8154/2535-8154-8ab8f397482cad2871ce9e0a293d0ca1-565×800.jpg The latest volume, “Pound for Pound: The Illustrated Guide to the Strongest Underwater Kings” is now on sale!!
▶https://hon.gakken.jp/book/1020615500 The underwater world is home to gigantic creatures. “If all the aquatic creatures were the same weight, which one would be the strongest?” — An unexpected and fierce battle awaits!! ★The “Strongest King Encyclopedia” series is celebrating its 10th anniversary! Various projects are currently underway! ■10th anniversary site now available!
:https://gakken-ep.jp/extra/saikyooh_10th_anniv/ ■ Click here for the series official website: https://saikyooh.gakken.jp/ ■We’re also constantly updating our social media profiles! Please follow us! ・X (old Twitter): Strongest King Encyclopedia [Official] @saikyououzukan ▶https://x.com/saikyououzukan ・Instagram: Strongest King Encyclopedia [Official] @gakken_saikyououzukan
▶https://www.instagram.com/gakken_saikyououzukan/ [Product Overview]
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https://prcdn.freetls.fastly.net/release_image/2535/8154/2535-8154-ecf7bd087f87a9ccb7bd816c1a937ff4-1929×2700.jpg ■Anime Strongest King Encyclopedia x Drill (Toddler Edition) “Numbers, Ages 3-4” ■Anime Strongest King Encyclopedia x Drill (Toddler Edition) “Numbers, Clocks, Ages 4-6” List Price: ¥1,320 each (tax included) Release date: September 18, 2025 Format: A4 / 64 pages Digital version: None ISBN: “Numbers for ages 3-4” 978-4-05-206145-5 / “Numbers and Clocks for ages 4-6” 978-4-05-206144-8 Gakken Publishing Website: “Numbers for ages 3-4”https://hon.gakken.jp/book/1020614500 “Kazu Tokei 4-6 years old”https://hon.gakken.jp/book/1020614400 Official website:https://saikyooh.gakken.jp/ 【Purchase this book here】 ▼Amazon “Numbers for ages 3-4”:https://amzn.asia/d/16w9acD “Kazu Tokei 4-6 years old”:https://amzn.asia/d/gdrnANt ▼Rakuten Books “Kazu 3-4 years old”:https://books.rakuten.co.jp/rb/18294751/ “Kazu Tokei 4-6 years old”:https://books.rakuten.co.jp/rb/18294750/ ■Gakken Inc. https://www.corp-gakken.co.jp/ ・President and CEO: Nanjo Tatsuya ・Date of incorporation: January 13, 2009 (company name changed on October 1, 2022) ・Capital: 50 million yen ・Address: 2-11-8 Nishigotanda, Shinagawa-ku, Tokyo 141-8416 ・Business activities: Publishing and content, global business, medical and nursing publishing content, kindergarten and school business,
classroom-related business, e-commerce and online business, and advertising business. ■GAKKEN HOLDINGS CO., LTD.
https://www.gakken.co.jp/ ・President and CEO: Miyahara Hiroaki ・Date of incorporation: March 31, 1947 ・Capital: 19,817 million yen ・Sales: 185.5 billion yen, 79 consolidated subsidiaries (fiscal year ending September 2024) Listed on the Prime Market of the Tokyo Stock Exchange (Stock Code: 9470) ・Address: 141-8510 2-11-8 Nishigotanda,
Shinagawa-ku, Tokyo ・Telephone: 03-6431-1001 (Main) ・Business Description: Holding company established in 1946, engaged in education, medical care, and welfare-related businesses. Education: Classroom and cram school operations, including “Gakken Classrooms,” Publishing and content operations, such as educational materials, Preschool and school operations, such as textbooks and childcare supplies, Medical and Welfare: Serviced housing for the elderly, Dementia group homes, Childcare support operations, such as nurseries and after-school programs, Global: Activities and operations in over 150 countries.