[Series has sold over 250,000 copies] The “Easy with Manga!” series now includes a “Calculus” edition! A collaboration between a super popular educational YouTuber and a manga artist, this 7-day manga lecture will give you a fresh start on high school math.
Gakken Holdings Co., Ltd. Press Release: September 26, 2025 To Members of the Press [Series has sold over 250,000 copies] “Easy with Manga! The “Calculus” edition of the “Calculus” series has arrived! A collaboration between a super-popular educational YouTuber and a manga artist, this 7-day manga lecture will take you back to your high school math days. Relearn in a fun and easy-to-understand way with this story-based manga drawn by Dengan, the super-popular educational YouTuber with 350,000 subscribers, and manga artist Kyoko Yumiya! 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) began pre-orders for “Easy Manga! Learn the Basics of Calculus in 7 Days” (released October 9, 2025) on Tuesday, September 16, 2025. This book is a story-based manga lecture that teaches you how calculus works in seven days. Throughout its seven chapters, you’ll progress step by step from the basics of mathematics to calculus calculations. ■The entertaining lectures of super popular educational YouTuber Dengan have been made into a manga!
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https://prcdn.freetls.fastly.net/release_image/2535/8207/2535-8207-84969fd6ac7979fc247ca05047adc677-1908×1348.jpg It also includes a wealth of information on the historical background of calculus and anecdotes about famous mathematicians. For example, through the stories of Newton and Leibniz, who contributed to the development of calculus, you can learn about how mathematics has evolved. You’ll experience the joy of learning, rather than simply memorizing formulas and equations.
https://prcdn.freetls.fastly.net/release_image/2535/8207/2535-8207-44d546be9a731b70bfa1ca6c7f12ae50-1908×1348.jpg This content is perfect for students currently studying mathematics, as well as those looking for a refresher. Why not take this
opportunity to re-enter the world of calculus? [Author Profile] ●Dengan Educational YouTuber living in Kansai. He posts videos on the “Daily Dengan” channel and other channels, conveying the joy of science and engineering on a daily basis. He graduated from the Faculty of Engineering Science at Osaka University and completed his Master’s degree at the Graduate School of Engineering Science at the same university. His books include “100 Study Rules for Idiots by a Former Idiot!” (SB Creative) and “Learn the Basics of Middle School Science with Mr. Dengan: 60 Lessons” (Bun’eido). ▶X (old Twitter): @dengan875 ▶Instagram: @dengan87_5 ▶YouTube: @nichijo_dengan ●Kyoko Yumiya Manga artist and illustrator living in the Kanto region. She writes essays about her life with her family and beloved cat, and is active in comic magazines and other publications. Her works include “Is It Wrong to Ask My Husband to Be a Househusband?” (Shodensha). ▶X (formerly Twitter) / Instagram: @kyoko_yuge *All profiles are from September 2025. [Product Overview]
https://prcdn.freetls.fastly.net/release_image/2535/8207/2535-8207-f57e2b0450044f3f0f688f6ac35fee14-1903×2700.jpg ■ “Easy with Manga! Learn the Basics of Calculus in 7 Days.” 』 Author: Dengan, Manga: Yumiya Kyoko Price: 1,760 yen (tax included) Release date: October 9, 2025 Format: A5 / 168 pages Digital version: Available ISBN: 978-4-05-407016-5 Publisher: Gakken Co., Ltd. Gakken Publishing Website:https://hon.gakken.jp/book/1340701600# Official website:https://gakken-ep.jp/extra/manga-kantan7/ 【To reserve or purchase this book, click here】 ・Amazon
https://www.amazon.co.jp/dp/4054070167/ ・Rakuten Books
https://books.rakuten.co.jp/rb/18261166/ ・Seven Net
https://7net.omni7.jp/detail_isbn/978-4-05-407016-5 ■Gakken Inc. https://www.corp-gakken.co.jp/ ・President and CEO: Tatsuya Nanjo ・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 business, global business, medical and nursing publishing content business, business for kindergartens and schools, 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.