[New Children's Book] 120,000-copy Bestseller Renewed After 10 Years! 'Overwhelming! New UMA Encyclopedia' Released on June 5th! Packed with Classic and Recently Talked-About UMAs

Key facts

  • [New Children's Book] 120,000-copy Bestseller Renewed After 10 Years! 'Overwhelming! New UMA Encyclopedia' Released on June 5th! Packed with Classic and Recently Talked-About UMAs
  • Seitosha Co., Ltd. will release 'Overwhelming! New UMA Encyclopedia', the latest in the 'Overwhelming! Series' which has sold over 1.27 million copies cumulatively, on June 5, 2026. This is a renewal of a bestseller that sold 120,000 copies, updated for the first time in 10 years, featuring both classic and recently popular UMAs.
  • Source: PR Times
  • Date: June 5, 2026

Direct answer

Seitosha Co., Ltd. will release 'Overwhelming! New UMA Encyclopedia', the latest in the 'Overwhelming! Series' which has sold over 1.27 million copies cumulatively, on June 5, 2026. This is a renewal of a bestseller that sold 120,000 copies, updated for the first time in 10 years, featuring both classic and recently popular UMAs.

Citation
[New Children's Book] 120,000-copy Bestseller Renewed After 10 Years! 'Overwhelming! New UMA Encyclopedia' Released on June 5th! Packed with Classic and Recently Talked-About UMAs (June 5, 2026), PR Times
Source
PR Times
Date
June 5, 2026
Seitosha Co., Ltd. will release 'Overwhelming! New UMA Encyclopedia', the latest in the 'Overwhelming! Series' which has sold over 1.27 million copies cumulatively, on June 5, 2026. This is a renewal of a bestseller that sold 120,000 copies, updated for the first time in 10 years, featuring both classic and recently popular UMAs.
新製品NQ 0/100出典:PR Times

📋 Article Processing Timeline

  • 📰 Published: June 5, 2026 at 19:15
  • 🔍 Collected: June 5, 2026 at 10:35
  • 🤖 AI Analyzed: June 6, 2026 at 22:48 (36h 13m after Collected)
Seitosha Co., Ltd. (Bunkyo-ku, Representative Director: Kazunori Wakamatsu) announces the release of its new book, 'Overwhelming! New UMA Encyclopedia'.

This book is the latest volume in the immensely popular visual encyclopedia series 'Overwhelming! Series', which has sold over 1.27 million copies cumulatively. It is a renewal of the bestseller 'Overwhelming! World UMA Unidentified Creature Encyclopedia', which sold 120,000 copies, updated for the first time in 10 years with the addition of recently talked-about UMAs! It includes classic unidentified creatures like the 'Mongolian Death Worm' and 'Ningen', as well as recently discussed ones like 'Serpo People' and 'Lake'.

● Features of this book

★ Includes everything from classic UMAs to UMAs featured in popular anime!

★ Approaches the mysteries of UMAs with powerful illustrations and photos!

★ Significantly expanded content on cosmic unknowns like 'Project Serpo' and the 'Roswell Incident', as well as unidentified beings like aliens! Plenty to read!

★ Focuses on the habitats of UMAs in this renewal! You can feel the unknown creatures more realistically!

Packed with classic unidentified creatures and those gaining attention in anime, all depicted with powerful illustrations! This is a UMA encyclopedia that both adults and children can enjoy.

● Table of Contents
Explore the Mysteries of UMAs!
Chapter 1: Monsters Inhabiting the Earth
Chapter 2: Signs Lurking in the Water
Chapter 3: Mysterious Shadows Crossing the Sky
Chapter 4: Visitors from Space

[Book Overview]

■ Title: 'Overwhelming! New UMA Encyclopedia'

■ Supervisor: Itsuki Asari

■ Publisher: Seitosha Co., Ltd.

■ Release Date: June 5, 2026

■ Price: 1,430 yen (1,300 yen + tax)

■ Format/Pages: A5 / 224 pages

■ ISBN: 9784791634736

[Sales Pages]

■ Amazon: https://amzn.asia/d/0fcSsG2m

■ Rakuten Books: https://books.rakuten.co.jp/rb/18627290/

[Company Overview]

Trade Name: Seitosha Co., Ltd.

Representative: Representative Director Kazunori Wakamatsu

Location: 2-3-13 Yushima, Bunkyo-ku, Tokyo 113-0034

Business: Production and sale of books, electronic publications, etc.

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

■ Contact for this matter

Company: Seitosha Co., Ltd.

Contact Person: Kobayashi

TEL: 03-5800-3120

Email: media@seitosha.co.jp

FAQ

What is the target age for 'Overwhelming! New UMA Encyclopedia'?

Not specified, but as an encyclopedia with furigana likely provided for kanji, it is enjoyable from elementary school students to adults.

Where can I buy this book?

It can be purchased at online bookstores like Amazon and Rakuten Books, as well as at bookstores nationwide.

What is the difference from the previous work?

It is a renewal after 10 years, with recently talked-about UMAs added and significantly expanded content related to space.