Pre-Release Reprint Confirmed & Recommended by Horror Author Rii: 'Dakudadeira,' the Most "Unsettling" Collection of Strange Internet Documents, to be Released on April 30!
KADOKAWA Corporation will release 'Dakudadeira,' a mockumentary horror novel compiled from strange internet documents, on April 30, 2026. A pre-release reprint has been decided, and it is a much-talked-about work recommended by horror author Rii.
📋 Article Processing Timeline
- 📰 Published: April 30, 2026 at 03:00
- 🔍 Collected: April 29, 2026 at 18:31
- 🤖 AI Analyzed: April 29, 2026 at 18:43 (12 min after Collected)
KADOKAWA Corporation (Headquarters: Chiyoda-ku, Tokyo; Representative Director and President: Takeshi Natsuno) will release the novel 'Dakudadeira' by Ari Mochiya on Thursday, April 30.
## What is 'Dakudadeira'?
It is a mockumentary horror novel compiled by collecting and editing 'unexplained records' left on internet bulletin boards and social media. It was serialized on the novel submission site 'Kakuyomu,' where its unusual realism and extreme expressions became a hot topic on social media, leading to its decision for publication. The buzz continued after the announcement of its publication, achieving a pre-release reprint, and is now set to be released on April 30, 2026.
### Synopsis
This book is a collection of strange documents found on the internet.
This book summarizes strange documents found on the internet that the author has collected over the past decade or so, which were posted with the desire to share them with someone.
One of them is called 'Dakudadeira,' and this is used as the title.
While widely collecting strange documents from the corners of bulletin boards to the dark corners of social media, many documents that were subject to deletion by administrators or reports were also included.
During the selection of documents for publication, documents that were too extreme or too immoral to be published online, and had already been deleted, were also included, resulting in an increase of approximately one-third compared to the publicly available version.
We hope that by reading those documents together, we can widely share these ominous records.
Please note that this book contains some extremely graphic expressions, so those with heart conditions should read it with extreme caution.
### Recommendation Comment from Horror Author Rii Arrives!
As a fan, I am filled with great joy and a sense of 'I don't know' that this wonderful work and talent are being released to the world.
This work was so excessive that I could only applaud.
I wonder if no one will be able to catch up for a while.
I sincerely hope that the publication of this book will be a major event in the history of horror.
## Bibliographic Information
'Dakudadeira'
Author: Ari Mochiya
Release Date: April 30, 2026 (Thursday) *E-book distributed on the same day
List Price: 1,980 yen (1,800 yen + tax)
Format: B6 size paperback
Pages: 402 pages
ISBN: 9784047388284
Publisher: KADOKAWA Corporation
↓Click here for details
https://www.kadokawa.co.jp/product/322511001151/
## What is 'Dakudadeira'?
It is a mockumentary horror novel compiled by collecting and editing 'unexplained records' left on internet bulletin boards and social media. It was serialized on the novel submission site 'Kakuyomu,' where its unusual realism and extreme expressions became a hot topic on social media, leading to its decision for publication. The buzz continued after the announcement of its publication, achieving a pre-release reprint, and is now set to be released on April 30, 2026.
### Synopsis
This book is a collection of strange documents found on the internet.
This book summarizes strange documents found on the internet that the author has collected over the past decade or so, which were posted with the desire to share them with someone.
One of them is called 'Dakudadeira,' and this is used as the title.
While widely collecting strange documents from the corners of bulletin boards to the dark corners of social media, many documents that were subject to deletion by administrators or reports were also included.
During the selection of documents for publication, documents that were too extreme or too immoral to be published online, and had already been deleted, were also included, resulting in an increase of approximately one-third compared to the publicly available version.
We hope that by reading those documents together, we can widely share these ominous records.
Please note that this book contains some extremely graphic expressions, so those with heart conditions should read it with extreme caution.
### Recommendation Comment from Horror Author Rii Arrives!
As a fan, I am filled with great joy and a sense of 'I don't know' that this wonderful work and talent are being released to the world.
This work was so excessive that I could only applaud.
I wonder if no one will be able to catch up for a while.
I sincerely hope that the publication of this book will be a major event in the history of horror.
## Bibliographic Information
'Dakudadeira'
Author: Ari Mochiya
Release Date: April 30, 2026 (Thursday) *E-book distributed on the same day
List Price: 1,980 yen (1,800 yen + tax)
Format: B6 size paperback
Pages: 402 pages
ISBN: 9784047388284
Publisher: KADOKAWA Corporation
↓Click here for details
https://www.kadokawa.co.jp/product/322511001151/