Riin's First Autobiographical Book Launches for Pre-Order with Exclusive Editions

Riin Unveils First Autobiographical Book

The excitement among fans is palpable as Riin, a popular member of the 2.5D idol group Sutopuri, announces the launch of his first autobiographical book titled "Ikidzurai Bokutachi e" (To Those Who Struggle with Living), set to start pre-orders on May 31, 2026. This book promises to delve deep into Riin's personal experiences, revealing the challenges and triumphs of his life.

Book Overview

"Ikidzurai Bokutachi e" serves as a heartfelt testament to Riin's journey, expressing the struggles that have shaped him throughout his life and career. The book is written in his own words, aiming to resonate with readers who may find themselves grappling with feelings of discomfort or hardship. It traces Riin's path from before he encountered Sutopuri, through his initial foray into the entertainment world, and reflects on his experiences to this day.

To celebrate the book's release, STPR will also offer a limited edition special version available only through the STPR ONLINE STORE. Titled the "Special Edition," this version embodies the theme of "Opening the Door to the Heart" and comes in a unique hardcover with a special sleeve featuring a keyhole design. Inside, readers will find a beautifully crafted book adorned with foil-stamped details.

Additionally, the Special Edition includes two exclusive bromides—one showcasing the regular edition’s cover illustration by artist Takei Kuze, and another specially created by artist Eishi Hayama for this edition. Furthermore, fans will receive a replica handwritten letter addressed to them from Riin himself, titled "To You."

Exclusive Store Features

Various popular bookstores such as Animate, Miraiya, Kinokuniya, TSUTAYA, and Kumazawa will offer unique original covers, each representing different illustrations. Plus, customers purchasing from select stores, including Rakuten Books, will receive additional perks such as clear files, stickers, and postcards.

Special Edition Details

- Title: Ikidzurai Bokutachi e
- Author: Riin
- Pre-order Period: May 31, 2026 (00:00) to June 14, 2026 (23:59)
- Expected Delivery Date: July 15, 2026
- Price: ¥5,764 (tax included)
- Pages: 160
- Size: Height 194mm, Width 133mm, Thickness 22mm
- Publishing Entity: STPR, Published by Suirinsha

Pre-Order Page Here

Regular Edition Details

- Title: Ikidzurai Bokutachi e
- Author: Riin
- Release Date: July 15, 2026
- Price: ¥1,760 (tax included)
- Pages: 160

Additional Information and Features

Store-specific original covers:

- Animate: Illustrated by Mame
- Miraiya Bookstore: Illustrated by Eishi Hayama
- Kinokuniya: Illustrated by Rucaco
- TSUTAYA: Illustrated by Rucaco
- Kumazawa Bookstore: Illustrated by A-Chiki

Store-specific purchase bonuses include:

- Animate: A4 Clear File
- Miraiya Bookstore: Smartphone-sized Sticker
- Rakuten Books: Postcard
- Kinokuniya: Postcard
- TSUTAYA: Postcard
- Kumazawa Bookstore: Postcard

For more details, visit the Suirinsha Book Information Page.

About Riin

Riin is a beloved member of Sutopuri, a 2.5D idol group produced by STPR. Known for his vibrant personality and talents, Riin has amassed a significant online following, with over 2.3 million subscribers on YouTube and 1.3 million followers on TikTok as of May 2026. His dynamic career spans music, anime production, and voice acting. He is set to star in the group's first anime movie, slated for release in July 2024, along with a debut radio program and multiple album releases.

Riin's Official Links

About STPR

STPR is a comprehensive entertainment production company dedicated to creating captivating content that transcends dimensions. Founded on June 15, 2018, STPR supports the activities of Sutopuri and operates under various sectors, including music, events, and merchandising. With a mission to enhance the realm of entertainment, STPR continues to expand its reach within both Japanese and international markets.