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'Pi was 4!?' Over 450,000 YouTube fans went crazy, 'Enjoyable even for total humanities majors [Yukkuri Math Trivia]' where you can touch the truth of math with zero knowledge gets a long-awaited book adaptation!

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

Published Apr 16, 2026 10:00 AM ・ Updated Jun 17, 2026 8:57 PM ・ 2 min read ・ Source: PR TIMES

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⚡ Key Points

KADOKAWA announced the book adaptation of the popular YouTube math channel 'Yukkuri Math Trivia', which has over 450,000 subscribers and offers entertaining mathematical insights requiring no prior knowledge.

KADOKAWA announced the book adaptation of the popular YouTube math channel 'Yukkuri Math Trivia', which has over 450,000 subscribers and offers entertaining mathematical insights requiring no prior knowledge.

PRIMARY SOURCE PR TIMES View source Distributor: PR TIMES
Published: Apr 16, 2026

A comprehensive entertainment company that develops businesses in publishing, anime/live-action video, games, web services, and education/EdTech. We discover talent from all over the world, create a variety of IPs, and deploy them across various media. We are promoting the maximization of IP value under our 'Global Media Mix with Technology' strategy, which delivers the created IPs to the world by leveraging technology. https://group.kadokawa.co.jp/

FACT BOX

Source: PR TIMES
Category: New Product
Organizations: KADOKAWA / YouTube

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

Announced　Apr 16, 2026 10:00 AM — Distributor PR TIMES
Collected　Apr 16, 2026 10:31 AM
AI structured & analyzed　Apr 19, 2026 5:15 AM
Desk-reviewed & published　Apr 16, 2026 10:00 AM

FAQ

What is the title of the book adaptation mentioned in the article?

The book adaptation is based on 'Enjoyable even for total humanities majors [Yukkuri Math Trivia]'.

How many YouTube fans went crazy according to the title of the article?

According to the title, over 450,000 YouTube fans went crazy over it.

What strategy does the comprehensive entertainment company promote?

The company promotes its strategy called 'Global Media Mix with Technology'.

What businesses does the comprehensive entertainment company develop?

It develops businesses in publishing, anime/live-action video, games, web services, and education/EdTech.

What is the official website URL of the company mentioned in the text?

The website URL of the company mentioned in the text is https://group.kadokawa.co.jp/.

Cite this article — HOW TO CITE

Washin AI News Desk“'Pi was 4!?' Over 450,000 YouTube fans went crazy, 'Enjoyable even for total humanities majors [Yukkuri Math Trivia]' where you can touch the truth of math with zero knowledge gets a long-awaited book adaptation!”AI News by Washin Village（和心村）, Apr 16, 2026. https://aeo.washinmura.jp/ai/%E6%A0%AA%E5%BC%8F%E4%BC%9A%E7%A4%BEkadokawa/en/news/2026-04-19-pi-was-4-over-450-000-youtube-fans-went

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