[Commemorative release event also decided!] CreepHyp's Sekaikan Ozaki's daily diary "Ozaki Sekaikan's Diary of Unwritten Things" to be released on Monday, June 22, 2026!
Sekaikan Ozaki of the rock band CreepHyp's new diary, "Ozaki Sekaikan's Diary of Unwritten Things," will be released by KADOKAWA on June 22, 2026. Popular picture book author Shinsuke Yoshitake is providing illustrations, and a commemorative talk event has also been decided. The event will be held at HMV BOOKS SHIBUYA on June 29, with applications open until May 10.
📋 Article Processing Timeline
- 📰 Published: April 28, 2026 at 03:00
- 🔍 Collected: April 27, 2026 at 18:31
- 🤖 AI Analyzed: April 27, 2026 at 19:30 (58 min after Collected)
KADOKAWA Corporation (Headquarters: Chiyoda-ku, Tokyo; Representative Director, President, and CEO: Tsuyoshi Natsuno) will publish "Ozaki Sekaikan's Diary of Unwritten Things" (Author: Sekaikan Ozaki, Illustrations: Shinsuke Yoshitake) on Monday, June 22, 2026.
*Cover design may change.
Sekaikan Ozaki, the frontman of the rock band CreepHyp and a recognized author whose works have been nominated twice for the Akutagawa Prize, is now releasing a long-awaited book. His series "Ozaki Sekaikan's Diary of Unwritten Things," which chronicled his daily life for one year from December 25, 2024, to December 24, 2025, in the book and manga culture magazine "Da Vinci," will be released as a standalone volume on Monday, June 22.
Each daily entry has a unique structure, ending with a percentage indicating the ratio of "unwritten things" for that day. This allows readers to enjoy not only what is written in the diary but also to imagine what was left unsaid.
The cover illustration and internal illustrations are handled by the popular picture book author and illustrator Shinsuke Yoshitake. His illustrations, titled "Diary I Read Diary," which respond to Ozaki's diary, will be featured monthly, creating a unique collaboration that can only be seen here. Please take a look.
A commemorative release talk event has also been decided!
To celebrate the book's release, a talk event with Shinsuke Yoshitake has also been confirmed!
Since these two individuals have been writing and reading diaries for a year, it might be possible to hear "behind-the-scenes stories" that can only be heard here!
Applications for the event are being accepted from today, Monday, April 27, 18:00, until Sunday, May 10, 23:59.
[Date and Time] Monday, June 29, 2026, 18:00 onwards
[Location] HMV BOOKS SHIBUYA
▼Apply here
http://www.hmv.co.jp/news/article/260420184/
*For inquiries regarding the event, please contact the implementing store.
Author Biography
Sekaikan Ozaki
Born in Tokyo in 1984. Vocalist and guitarist for the rock band "CreepHyp." In 2016, he published his first novel "Yusuke," which became a topic of discussion. Since then, he has also been active as an author, with his works "Mother's Shadow" and "Voice of Transformation" both nominated for the Akutagawa Prize. Other works include essays "Bitter Juice 100%" and "Bitter Juice 200%," "On Days So Happy You Want to Cry," a collaborative novel with Naoki Prize-winning author Akane Chihaya "Even Dogs Don't Eat It," interview collections "Meaningful Stories and What's Stuck in My Teeth," "Aoki Sekaikan," and a lyric collection "Private Language," among others.
Shinsuke Yoshitake
Born in Kanagawa Prefecture in 1973. Completed the Integrated Design Course at the Graduate School of Art and Design, University of Tsukuba. His work "Perhaps an Apple" won the 61st Sankei Children's Book Award for Art, and the English version of "Boring, Boring" (Hakusensha), titled "The BoringBook," won the 2019 New York Times Best Illustrated Children's Book Award. He has also received numerous other awards, including the MOE Picture Book Award and Kinobees Kids! He publishes a wide range of works, including sketch collections that capture everyday moments from a unique perspective, illustrations for children's books, cover designs, and illustrated essays.
Bibliographic Information
Title: Ozaki Sekaikan's Diary of Unwritten Things
Author: Sekaikan Ozaki
Illustrations: Shinsuke Yoshitake
Price: 1,980 yen (1,800 yen + tax)
Release Date: Monday, June 22, 2026 *E-book simultaneously released
Format: Shirokuban (B6 size) hardcover
Page Count: 296 pages (scheduled)
ISBN: 978-4-04-660189-6
Publisher: KADOKAWA Corporation
KADOKAWA Official Book Details Page >>
*Cover design may change.
Sekaikan Ozaki, the frontman of the rock band CreepHyp and a recognized author whose works have been nominated twice for the Akutagawa Prize, is now releasing a long-awaited book. His series "Ozaki Sekaikan's Diary of Unwritten Things," which chronicled his daily life for one year from December 25, 2024, to December 24, 2025, in the book and manga culture magazine "Da Vinci," will be released as a standalone volume on Monday, June 22.
Each daily entry has a unique structure, ending with a percentage indicating the ratio of "unwritten things" for that day. This allows readers to enjoy not only what is written in the diary but also to imagine what was left unsaid.
The cover illustration and internal illustrations are handled by the popular picture book author and illustrator Shinsuke Yoshitake. His illustrations, titled "Diary I Read Diary," which respond to Ozaki's diary, will be featured monthly, creating a unique collaboration that can only be seen here. Please take a look.
A commemorative release talk event has also been decided!
To celebrate the book's release, a talk event with Shinsuke Yoshitake has also been confirmed!
Since these two individuals have been writing and reading diaries for a year, it might be possible to hear "behind-the-scenes stories" that can only be heard here!
Applications for the event are being accepted from today, Monday, April 27, 18:00, until Sunday, May 10, 23:59.
[Date and Time] Monday, June 29, 2026, 18:00 onwards
[Location] HMV BOOKS SHIBUYA
▼Apply here
http://www.hmv.co.jp/news/article/260420184/
*For inquiries regarding the event, please contact the implementing store.
Author Biography
Sekaikan Ozaki
Born in Tokyo in 1984. Vocalist and guitarist for the rock band "CreepHyp." In 2016, he published his first novel "Yusuke," which became a topic of discussion. Since then, he has also been active as an author, with his works "Mother's Shadow" and "Voice of Transformation" both nominated for the Akutagawa Prize. Other works include essays "Bitter Juice 100%" and "Bitter Juice 200%," "On Days So Happy You Want to Cry," a collaborative novel with Naoki Prize-winning author Akane Chihaya "Even Dogs Don't Eat It," interview collections "Meaningful Stories and What's Stuck in My Teeth," "Aoki Sekaikan," and a lyric collection "Private Language," among others.
Shinsuke Yoshitake
Born in Kanagawa Prefecture in 1973. Completed the Integrated Design Course at the Graduate School of Art and Design, University of Tsukuba. His work "Perhaps an Apple" won the 61st Sankei Children's Book Award for Art, and the English version of "Boring, Boring" (Hakusensha), titled "The BoringBook," won the 2019 New York Times Best Illustrated Children's Book Award. He has also received numerous other awards, including the MOE Picture Book Award and Kinobees Kids! He publishes a wide range of works, including sketch collections that capture everyday moments from a unique perspective, illustrations for children's books, cover designs, and illustrated essays.
Bibliographic Information
Title: Ozaki Sekaikan's Diary of Unwritten Things
Author: Sekaikan Ozaki
Illustrations: Shinsuke Yoshitake
Price: 1,980 yen (1,800 yen + tax)
Release Date: Monday, June 22, 2026 *E-book simultaneously released
Format: Shirokuban (B6 size) hardcover
Page Count: 296 pages (scheduled)
ISBN: 978-4-04-660189-6
Publisher: KADOKAWA Corporation
KADOKAWA Official Book Details Page >>