[Out Today] Release of 'Hamuhon: A Book to Understand Hamster Feelings', the Latest in the 400,000-Copy Pet Book Series, on May 19th

● What is the '〇〇hon' series?

This is a highly popular series representing Seitosha's pet books, packed with both 'cuteness' and 'usefulness', explaining the true feelings of pets in a 100-question, 100-answer format. It is an educational reader that allows you to learn about pet ecology, behavior, and feelings enjoyably through cute manga and easy-to-understand scientific explanations.

● The highly anticipated latest release after 5 years features hamsters!

The series has previously featured cats, dogs, birds, and rabbits. 'Hamuhon' was realized in response to readers' requests saying, 'Please do hamsters next!'

Through a luxurious collaboration between Megumi Fujimoto, an illustrator who also works on Seitosha's popular children's book series 'Anyway, Cute Creatures,' and zoologist Dr. Tadaaki Imaizumi, the book explains hamster behavior and psychology in detail.

● A special IC card sticker is included as a limited quantity bonus!

At participating bookstores nationwide, Rakuten Books, and Amazon, a campaign is underway to give away a special original IC card sticker for the series to commemorate the series surpassing 400,000 copies sold and the release of the 5th volume, 'Hamuhon'!

The stickers are limited in quantity and the offer will end once they are gone.

● Participating stores nationwide will give away a special IC card sticker for the purchased book!

If you purchase any of 'Nekohon', 'Inuhon', 'Torihon', 'Usahon', or the new 'Hamuhon', you will receive a special IC card sticker of the purchased book. If there is a book you are interested in but haven't read yet, please take this opportunity to buy it.

[About the bonus at bookstores nationwide]

* The bonus is limited in quantity. It may not be available depending on the timing. * The sales period and method for books with bonuses may vary by store. * This project may change or end without notice.

● Two versions of the bonus edition are available on Amazon and Rakuten Books!

(1) If you purchase the new release 'Hamuhon' (bonus edition), you will receive one 'Hamuhon special IC card sticker'.

(2) Those who purchase the 5-book series set will receive a complete set of 5 stickers for the entire series.

[About Rakuten Books & Amazon bonuses]

* On Amazon and Rakuten Books, purchasing previous books in the series other than the 'Hamuhon' (bonus edition) will not include a bonus. * The only product that comes with stickers other than 'Hamuhon' is the 'Series 5-Book Set Bonus Edition'.

● The '〇〇hon' Series

Title: Nekohon - A book to understand cat feelings ■ Supervisor: Tadaaki Imaizumi ■ Manga: Tamako Tamagoyama ■ Publisher: Seitosha Co., Ltd. ■ Price: 1,320 yen (1,200 yen + tax)

Title: Inuhon - A book to understand dog feelings ■ Supervisor: Tadaaki Imaizumi ■ Manga: Aoi Dousetsu ■ Publisher: Seitosha ■ Price: 1,320 yen (1,200 yen + tax)

Title: Torihon - A book to understand pet bird feelings ■ Supervisor: Tetsuya Isozaki ■ Manga: Moneko ■ Publisher: Seitosha ■ Price: 1,320 yen (1,200 yen + tax)

Title: Usahon - A book to understand rabbit feelings ■ Supervisor: Tadaaki Imaizumi ■ Manga: Kei Kurata ■ Publisher: Seitosha Co., Ltd. ■ Price: 1,320 yen (1,200 yen + tax)

[Book Overview]

Title: 'Hamuhon - A book to understand hamster feelings' ■ Supervisor: Tadaaki Imaizumi ■ Manga: Megumi Fujimoto ■ Publisher: Seitosha Co., Ltd. ■ Release Date: Tuesday, May 19, 2026 ■ Price: 1,320 yen (1,200 yen + tax) ■ Format/Pages: B6/192 pages ■ ISBN: 9784791633067