[Free Digital Edition] Read the Popular Picture Book 'Haburashi Rocket' That Gets Kids Eager to Brush Their Teeth!

Gakken Co., Ltd. (Shinagawa, Tokyo; President: Tatsuya Nanjo), a subsidiary of Gakken Holdings Co., Ltd., is providing free limited-time access to the digital version of 'Haburashi Rocket,' part of the 'Yuki Kinoshita Exciting Picture Book' series, from June 3 to June 18, 2026.

■ A Revolution in Tooth-Brushing Struggles? A Picture Book for Parents and Kids to Enjoy

'Haburashi Rocket' is a concept-rich picture book that turns teeth-brushing into a game of pretend. It was written by Yuki Kinoshita, a parenting influencer with over 2 million followers (as of May 2026).

Addressing common parenting challenges such as kids refusing to open their mouths, running away at the sight of a toothbrush, or parents having to force them to brush, this book helps families enjoy building healthy tooth-brushing habits together.

Since its release, the company has received numerous positive reviews from readers saying, "My child now loves brushing!" and "They brush without complaining!"

■ June 4 is 'Tooth Decay Prevention Day' (Teeth and Mouth Health Week)!
Free Limited-Time Access to 'Haburashi Rocket,' the Picture Book That Makes Brushing Fun

To coincide with 'Tooth Decay Prevention Day' (Teeth and Mouth Health Week) on June 4, Gakken is offering free access to the digital version of 'Haburashi Rocket' on its official blog.

Please take this opportunity to use the book as a way to have fun thinking about dental health with your children.

■ Synopsis of 'Haburashi Rocket'

Haburashi (Toothbrush) Rocket, press the launch switch!
Can it land in your mouth successfully?

Boop on the cheek.
Boing on Dad's belly.
Finally arrived inside the mouth!

Wait, the mouth is full of germs!
The Toothbrush Rocket chases them! Catch them!

■ The First Picture Book Series from Parenting Influencer Yuki Kinoshita

The author, Yuki Kinoshita, is a "parenting influencer" who has gained popularity for his humorous parenting content, including diaper-changing videos and parenting impersonations. Based on his actual parenting experience, this book was created as part of a series intended to "funnily solve life-habit challenges."

Illustrations are provided by uwabami, an art unit also popular for their work on shows like 'Shinapushu.' Their approachable and engaging illustrations are part of the book's appeal for both parents and children.

[Product Overview]

■ Yuki Kinoshita's Exciting Picture Book 'Haburashi Rocket'
Author: Yuki Kinoshita, Illustrations: uwabami
Supervision: Tsutomu Iwamoto (Specialist and Instructor in Pediatric Dentistry, Tokyo Medical and Dental University)
Price: 1,430 yen (tax included)
Release Date: April 17, 2025
Format: 210 x 207 mm / 28 pages
Digital edition: Available
ISBN: 978-4-05-206062-5
Publisher: Gakken Co., Ltd.