[New Book] Rilakkuma and the "Happiness Hormone" Foster Attachment. Science-Based Touch Picture Book "Ta-chi Ta-chi Rilakkuma" to be Released June 3, 2026!

KADOKAWA Corporation (Headquarters: Chiyoda-ku, Tokyo; President and CEO: Takeshi Natsuno) is pleased to announce the release of the picture book "Rilakkuma Go-yururi Skinship Ehon: Ta-chi Ta-chi Rilakkuma" for ages 0-3, featuring the beloved character Rilakkuma, on Wednesday, June 3, 2026. Pre-orders are currently being accepted at bookstores and online retailers nationwide.

『Rilakkuma Go-yururi Skinship Ehon: Ta-chi Ta-chi Rilakkuma』

Introduction

◆ Elicit Your Baby's "Round Smile"! A First Book for Relaxing Parent-Child Time

This book allows you to play with your baby through touch, alongside the popular character Rilakkuma and its friends, who are loved by children and adults alike.

Rilakkuma is known for its relaxed, go-at-its-own-pace demeanor. We created this book with the hope that it would not only be an enjoyable picture book time for babies but also a relaxing moment for parents amidst their busy childcare schedules.

Please enjoy this book leisurely with your baby.

◆ Supervised by Dr. Hajime Yamaguchi, a Leading Expert in "Touch Science," Scientifically Supports Development

This book was created with the aim of being a book that scientifically promotes development and attachment formation through skinship, supervised by Dr. Hajime Yamaguchi (Professor at J.F. Oberlin University), a leading expert in "Touch Science," which researches touch from both scientific and psychological perspectives.

Of the five senses, touch develops the earliest. Its stimulation not only nurtures a baby's brain and mind but is also key to scientifically deepening the bond between parent and child.

◆ Why is "Skinship" Important Now?

The "happiness hormone" oxytocin, secreted through physical contact, offers numerous benefits for babies.

◎ Promotes Attachment Formation

⇒ Stable trust relationships (attachment) are formed through skinship.

◎ Supports Brain Development

⇒ Stimulation of the skin directly reaches the brain and is also noted for its benefits in intellectual development, such as improving memory.

◎ Resilience to Stress

⇒ Children who consistently secrete oxytocin are said to be better equipped to overcome difficulties.

Furthermore, oxytocin secretion is expected not only in babies but also in caregivers who engage in physical contact, offering stress relief and refreshment.

『リラックマ ごゆるり スキンシップえほん たーっちたっち リラックマ』

◆ Features of "Ta-chi Ta-chi Rilakkuma"

1. Easy for Babies to Understand: Simple, Repetitive Phrases

The book uses simple, repetitive phrases that babies can easily understand and enjoy, such as "Ta-chi!" (Touch!) and "A-re?" (Huh?).

2. Engaging Illustrations: Bright Colors and Familiar Characters

The illustrations feature bright, appealing colors and the familiar characters of Rilakkuma and its friends, designed to capture babies' attention.

3. Interactive Elements: Encourages Physical Interaction

The book incorporates elements that encourage babies to touch the pages and interact with the characters, promoting active engagement.

4. Parent-Child Bonding: A Shared Experience for Relaxation and Connection

Designed for shared reading, the book provides opportunities for parents and babies to connect and relax together.

◆ About the Author/Illustrator

Author: Rilakkuma (San-X Co., Ltd.)

Rilakkuma is a popular character created by San-X Co., Ltd., known for its relaxed and comforting presence.

Supervisor: Hajime Yamaguchi

Professor at J.F. Oberlin University. Specializes in developmental psychology and child development. A leading expert in "Touch Science," researching the impact of touch on infant development and parent-child relationships.

◆ Product Information

Title: Rilakkuma Go-yururi Skinship Ehon: Ta-chi Ta-chi Rilakkuma

Release Date: June 3, 2026 (Wednesday)

Price: ¥1,320 (tax included)

Format: Board book, 20 pages

Publisher: KADOKAWA

ISBN: 978-4-04-607300-0

Product Page: [Link to Product Page - Placeholder]

KADOKAWA Official Website: [Link to KADOKAWA Official Website - Placeholder]

Rilakkuma Official Website: [Link to Rilakkuma Official Website - Placeholder]

About KADOKAWA

KADOKAWA Corporation is a leading entertainment company in Japan, involved in publishing, film, games, and digital content. With a diverse portfolio of intellectual properties, KADOKAWA aims to create new forms of entertainment and enrich people's lives.

About Rilakkuma

Rilakkuma is a beloved character that debuted in 2003. Known for its laid-back personality and comforting presence, Rilakkuma has gained a massive following worldwide. The character embodies a sense of relaxation and encourages a slower pace of life.

About Dr. Hajime Yamaguchi

Dr. Hajime Yamaguchi is a distinguished professor at J.F. Oberlin University and a pioneer in the field of "Touch Science." His research focuses on the profound impact of touch on infant development, attachment, and overall well-being. He is dedicated to promoting the importance of physical interaction in fostering healthy parent-child relationships.