CALL4 Co-Representatives’ New Book “An Introduction to Public Interest Litigation: Our Tool for Moving Society” Goes on Sale Today, with Four Commemorative Talk Events in Tokyo and Osaka

CALL4, a certified specified nonprofit corporation that operates CALL4, Japan’s first web platform specialized in supporting public interest litigation (*1), announced that the new book “An Introduction to Public Interest Litigation: Our Tool for Moving Society” (Shueisha Shinsho), co-authored by members including CALL4’s co-representative directors, went on sale today, Friday, May 15, 2026, at bookstores nationwide in Japan and online. To commemorate the publication, four talk events featuring the authors and guests from various fields will be held in Tokyo and Osaka. CALL4 invites media consideration for coverage and publication. *1 Based on CALL4’s own research, including opinions from lawyers, conducted in September 2019 regarding web-based support platforms in Japan specializing in public interest litigation support. About the Book This book is an introductory guide that comprehensively presents public interest litigation for the first time to readers who feel that “society will not change even if I speak up” or who “want to speak up but do not know how.” Public interest litigation aims to address social issues through the judiciary. In accessible language for readers without legal expertise, the book explains the process and potential of using court cases to change society when people feel that something is wrong in areas such as discrimination, labor, the environment, gender, and social security. Details and purchase information: https://www.shueisha.co.jp/books/items/co te ts.html?isb =978-4-08-721410-9 Preview The book’s preface, “Introduction,” is available for free on CALL4’s official website. https://www.call4.jp/colum /?p=4642 Publication Commemorative Talk Events in Tokyo and Osaka Talk events featuring the authors and guests from various fields will be held at bookstores and event spaces in Tokyo and Osaka. Online streaming is planned for all events. Tokyo: Masachi Osawa × Taiki Taniguchi, “From the Individual to the Public” May 29, 19:00 | Tonarimachi Coffee, Nakanobu, Tokyo | Streaming available CALL4 co-representative Taiki Taniguchi and sociologist Masachi Osawa will discuss the relationship between law and society, starting from the question of what public interest litigation is. Tickets and details: https://peatix.com/eve t/4994313 Osaka: Michiko Kameishi × Hee Chul Joo, Double Publication Talk: Public Interest Litigation for Living Together in a Fragmented World June 3, 19:00 | Junkudo Bookstore Umeda, Osaka | Streaming available Lawyer Michiko Kameishi and philosopher Hee Chul Joo, who recommended the book, will discuss the social impact of the judiciary from a philosophical perspective, based on real public interest litigation experiences such as the tattoo case. Tickets and details: https://ho to.jp/sto e/ ews_1570065_14HB320_081.html *The ticket and details page above will be published soon. Osaka: Publication Event for “An Introduction to Public Interest Litigation” — Michiko Kameishi × Darthreider: Thinking About Our Tools for Moving Society June 7, 16:00 | momo books, Kujo, Osaka | Streaming available Lawyer Michiko Kameishi and rapper Darthreider will discuss questions surrounding freedom of expression and social justice from the perspectives of an expert and an artist. Tickets and details: https://momobooks.jp/RmX8KLhJ/_ONqMtww Tokyo: Hee Chul Joo × Momoko Nojo × Orie Maruyama, “From One Person’s Voice to Public Conversation” June 16, 19:30 | Bookstore B&B, Shimokitazawa, Tokyo | Streaming available CALL4 co-representative Orie Maruyama, NO YOUTH NO JAPAN founder Momoko Nojo, and philosopher Hee Chul Joo will discuss the potential of public interest litigation as a tool for moving society, and what it means to live together in a fragmented world. Tickets and details: https://booka dbee .com/eve t/20260616_ovp/ Author Comments and Profiles Taiki Taniguchi | CALL4 Co-Representative, Lawyer Taniguchi says that in trains where most people are looking at smartphones, he feels quietly happy when he sees someone reading a book. Perhaps it is because he knows the unique fulfillment of finishing a book and the joy of becoming slightly different from who he was before. Although the judiciary, law, and public interest litigation may sound rigid, they are in fact close to us and form a very powerful world. This book presents that world as clearly as possible. He hopes many readers will look up from the book with the feeling that they, too, might be able to do something. Taniguchi has made improving access to justice his life’s work. He works on cases involving foreign residents, poverty support, and community building, while also practicing as an expert in public interest litigation and criminal cases. He is the founder and co-representative director of CALL4, and also serves as a director of LEDGE. Orie Maruyama | CALL4 Co-Representative, Creative Director Maruyama says she once thought the judiciary had little to do with her, but after visiting public interest litigation sites, she found herself involved for around seven years. The passionate voices of plaintiffs, the accumulated logic woven by legal teams, and the energy to change society that rises from them all show that public interest litigation has a power to move society that differs from elections and demonstrations. She hopes the book reaches readers who find it difficult or irrelevant, as she once did, and that their view of the world expands a little after reading it. After serving as editor-in-chief of an information magazine, Maruyama became independent in 2018 and joined CALL4. She has served as co-representative director since 2023. In addition to creative direction, she writes about the backgrounds of lawsuits and the thoughts and stories of the people involved. Daisuke Igeta | CALL4 Deputy Representative, Lawyer Igeta notes that whether in industrial manufacturing schemes or software development processes, there is always a stage for checking bugs. State governance is the same. The Diet makes laws in response to social demands, and administrative agencies enforce them. In that process, bugs inevitably arise at a certain rate. They may appear as people who should have been protected by law being left out, or as unforeseen disadvantages imposed on someone. The Constitution established the system of constitutional review in Article 81 so that the judiciary can remove such bugs through evidence and reason. Bringing, supporting, and discussing public interest litigation is also a way of participating in debugging state governance. Igeta positions public interest litigation as a professional field and has been involved in around 25 public interest lawsuits. He is one of the founding members of certified NPO CALL4 and manages the secretariat of LEDGE. His co-authored works include “Snowden’s Warning to Japan” and “Snowden Talks About Japan as a Surveillance State” (Shueisha Shinsho). Michiko Kameishi | Representative of LEDGE, Lawyer Kameishi says the book is for people who feel, “Isn’t this wrong?” but do not know how to speak up. Public interest litigation is not only for special people. It is a tool that every citizen who wants to make society better than it is now can use. Rather than difficult legal theory, the book presents the realities of plaintiffs and lawyers who have actually moved society. Written with colleagues working together on public interest litigation, it should resonate with anyone who has ever wanted to change society. Kameishi built her career mainly in criminal cases and won acquittals in high-profile cases such as the tattoo case, the illegal GPS investigation case, and the club Entertainment Business Act case. Since 2023, she has served as representative director of LEDGE, promoting and supporting public interest litigation. Her co-authored works include “Criminal Defense Lawyer” (Kodansha Gendai Shinsho). The book is also recommended by Hee Chul Joo, Momoko Nojo, and Mariko Yamauchi. Book Information Title: Shueisha Shinsho “An Introduction to Public Interest Litigation: Our Tool for Moving Society” Authors: Daisuke Igeta, Michiko Kameishi, Taiki Taniguchi, Orie Maruyama Release date: Friday, May 15, 2026 E-book release date: Friday, May 22, 2026 Price: 1,012 yen, including tax Format: Shinsho paperback, 224 pages ISBN: 978-4-08-721410-9 Publisher: Shueisha Publisher website: https://www.shueisha.co.jp/books/items/co te ts.html?isb =978-4-08-721410-9 *All royalties from this book will be donated to certified NPO CALL4 and its sister organization, LEDGE. About Certified Specified Nonprofit Corporation CALL4 Certified specified nonprofit corporation CALL4 is a nonprofit organization established to operate CALL4, a web platform that supports public interest litigation. Its activities are carried out by co-representatives Taiki Taniguchi, a lawyer, and Orie Maruyama, a creative director, along with pro bono members with diverse expertise. Details: https://www.call4.jp/ CALL4 will continue working through its web platform, events, books, and other activities to help people feel that the judiciary is closer to their everyday lives.