The latest work from the Fourth Boundary, “Non-Reason 1st
Photobook〈QUINTET〉,” is now available! Photobook of a fictional idol that doesn’t exist becomes number one on Amazon’s overall book rankings
MALLE Co., Ltd. Press release: October 30, 2025 To Members of the Press The latest work from Fourth Boundary, “Non-Reason 1st
Photobook〈QUINTET〉,” is now available! Photobook of a fictional idol that doesn’t exist becomes number one on Amazon’s overall book rankings The Fourth Boundary x Wani Books Begin Their Invasion of Bookstores
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Photobook〈QUINTET〉. In addition, immediately after pre-orders began, it ranked first in Amazon’s overall book category best-selling rankings (survey as of October 30, 2025). “Non-Raison 1st Photobook ” is a new type of everyday-invasion game that begins with “QUINTET,” the long-awaited debut photobook of the idol group “Non-Raison”.
https://prcdn.freetls.fastly.net/release_image/70555/28/70555-28-6d8419e53207b8110ddb6ea5c5f89097-1922×2700.jpg While “Non-Reason” is a fictional idol group that does not exist in real life, “QUINTET” is a photobook published by Wani Books, the publisher of numerous photobooks. The luxurious 128-page book will be available in bookstores nationwide from December 17th. The theme of this photobook is “Our Memories.” Laughing, crying, and laughing again—the four, who have been classmates since junior high school, revisit the memories of their days together and the places they remember, creating a life-size portrait of themselves.
https://prcdn.freetls.fastly.net/release_image/70555/28/70555-28-00cd63dd3061f81cc8377d4954125e8a-1083×1624.jpg The school rooftop, the gymnasium, the beach, the railroad
crossing—everywhere, the members’ “beginnings” live on, along with their unchanging friendships and futures. This book is filled with the members’ sincere feelings. The Fourth Boundary game uses everyday life as its platform, so it does not require a game console or dedicated app. Enjoy an everyday encroachment experience where the lines between reality and fiction become blurred, leaving you wondering whether this is a game story or a real story.
https://prcdn.freetls.fastly.net/release_image/70555/28/70555-28-d9140a48e783ed88409f3d2b8b7f1fa1-1083×1624.jpg In this work, you will come into contact with their friendship and delve into their feelings through this photo book. To make it enjoyable for a wider range of people, we’ve placed emphasis on the photo book portion this time, and the experience has been designed to be light. We won’t reveal the details of the experience, so please pick it up and enjoy it. This is a collaboration between the Fourth Boundary and Wani Books to invade everyday life, focusing on bookstores. Currently, ahead of the release date, preorders are being accepted on Amazon. The price is 4,500 yen (tax included). We hope you will acknowledge these women and blur the lines between them. ■Non-Reason 1st Photobook〈QUINTET〉 ・Genre: Everyday Life Invasion Game (ARG) ・Platform: Everyday ・Number of players: Recommended 1-2 ・Media: Books, Internet ■The Fourth Boundary The Fourth Boundary is a group of creators who weave stories in the ambiguous realm between reality and virtuality. ・Official website: https://www.daiyonkyokai.net/ ・X：https://x.com/daiyonkyokai ・Store: https://shop.daiyonkyokai.net/ ・Discord: https://discord.com/invite/CgmPzZuVSf
・note：https://note.com/daiyonkyokai/ (C) Fourth boundary / D4KK