Kodansha has spent more than a century building one of the most recognizable names in Japanese publishing. Its catalog includes Attack on Titan, Blue Lock, Akira, Parasyte, Fairy Tail and hundreds of other titles, while its business now stretches beyond books and magazines into anime, films, games, licensing and digital platforms. The company says it published 2,304 manga titles, 1,558 books and 386 magazines in Japan during 2024, with 133 million printed copies distributed. Yet behind that enormous cultural footprint is a company increasingly facing questions about how it treats creators, protects information and serves readers.
Kodansha Ltd. is headquartered in Bunkyo, Tokyo, and remains privately held rather than being a publicly traded corporation. Its president and CEO is Yoshinobu Noma, who was born on January 13, 1969, making him 57 in 2026. Noma studied law at Keio University, worked at Mitsubishi Bank and joined Kodansha in 1999. He became president in 2011 and remains in charge today. He is part of the Noma family that has dominated Kodansha’s leadership for generations. The company currently lists roughly 967 employees and annual sales of about ¥169.1 billion for fiscal 2025.
There is no credible basis in the material reviewed for describing Noma or Kodansha as running a fraud or Ponzi scheme, and no evidence surfaced of a criminal conviction against Kodansha for fraud or a comparable financial crime. That matters because the online criticism surrounding the publisher can easily blur the line between legitimate consumer frustration and proven misconduct. What the record does show is a series of separate controversies that, taken together, raise questions about corporate oversight at a company whose business increasingly depends on digital distribution, personal data and relationships with creators.
The newest problem is also one of the most concrete. In July 2026, an employee at Kodansha was targeted by a phishing attack. The employee was tricked into entering credentials through a fraudulent login page, allowing an attacker to access the employee’s corporate email account. Kodansha later disclosed that contact information belonging to as many as 3,812 people was taken from the account. The attacker then sent phishing messages impersonating the employee to 553 of those contacts. Kodansha said it notified affected people, reported the incident to Japan’s Personal Information Protection Commission and was investigating the cause while taking measures to prevent a recurrence.
The distinction is important. The breach was caused by an outside attacker using phishing rather than evidence that Kodansha deliberately sold or misused customer information. But the incident still puts the publisher’s security controls under scrutiny because the compromised mailbox contained thousands of external contacts. The episode also came at a difficult time for a company that increasingly describes itself as a technology-driven global content business. Kodansha’s own privacy policy acknowledges that it processes member information, payments, project applications and other personal data as part of its operations.
Another controversy has struck much closer to the creative heart of the company. In July 2026, Kodansha publicly apologized to Akane Shimizu, creator of Cells at Work!, after she described problems surrounding her working conditions, editorial relationship and the handling of credits on derivative works. Kodansha acknowledged that Shimizu had repeatedly requested improvements but that the company failed to establish an adequate medical supervision system and an appropriate production environment, including arranging assistants. The publisher also acknowledged problems involving consultation and crediting for certain spin-off publications and adaptations.
Shimizu’s accusations triggered wider discussion among manga creators, with other artists describing disputes involving editors, health concerns, workload and other problems within the publishing system. Those accounts should not automatically be treated as proven findings against Kodansha, but the company’s own apology gives the controversy a different weight. Kodansha was not simply responding to an internet rumor. It acknowledged shortcomings in its own handling of a major creator’s working environment and said its editorial department would improve its support structure.
Kodansha has also suffered a direct court defeat over journalism published by one of its magazines. In November 2025, the Tokyo District Court ordered Kodansha and the chief editor of its weekly magazine Friday to pay ¥2.2 million to comedian Sense Watanabe. Watanabe had sued over articles published between January and April 2024 concerning allegations about his involvement in inviting women to a gathering associated with comedian Hitoshi Matsumoto. The court concluded that the key claims were neither proven true nor supported by reasonable grounds to believe they were true. This was a judicial finding of defamation, not merely an online complaint.
At the same time, Kodansha has been one of the industry’s most aggressive defenders of intellectual property. In 2022, it joined KADOKAWA, Shueisha and Shogakukan in suing Cloudflare in Tokyo over its services to major manga piracy sites. The publishers said the sites carried more than 4,000 unauthorized manga works and attracted more than 300 million monthly visits at their peak. The companies originally sought hundreds of millions of yen in damages. In November 2025, the Tokyo District Court found Cloudflare liable and ordered payment of approximately ¥500 million to the four publishers, while the court recognized damages of roughly ¥3.6 billion in calculating the underlying harm.
That victory, however, is not the end of the matter. Cloudflare appealed to Japan’s Intellectual Property High Court and filed its appeal brief in February 2026, arguing that neutral internet infrastructure should not be held legally responsible for third-party content. The appeal means the Tokyo District Court judgment is not yet the final word. Kodansha therefore sits on both sides of an increasingly important digital-content battle: it is defending creators against piracy while simultaneously operating its own digital ecosystem through K MANGA and other online services.
Kodansha has faced criticism from users over that digital ecosystem. K MANGA, launched in the United States in May 2023, uses a points and ticket structure rather than relying entirely on a conventional subscription. Reviews on Apple’s App Store and discussions on Reddit repeatedly complain about the cost and complexity of unlocking chapters, the use of points earned through promotional games and the absence of a straightforward unlimited subscription comparable with some competing services. These are consumer opinions rather than findings of fraud, and other users praise the service for making otherwise difficult-to-license manga legally available.
Physical publishing has produced another persistent source of reader frustration. Manga collectors have repeatedly complained about inconsistent book heights, damaged spines, thin covers and perceived quality-control problems in English-language Kodansha editions. One long-running MangaCollectors discussion described Kodansha as a publisher with an excellent catalog but argued that printing quality and the company’s reluctance to move digital-only series into physical editions undermine that reputation. Another discussion contains readers describing repeated spine damage and other manufacturing defects. These complaints are anecdotal and do not establish that Kodansha itself manufactured defective books, but their repetition shows that quality control has become part of the brand’s consumer conversation.
The company is not retreating. It is expanding. In July 2026, Kodansha announced plans to enter India’s manga market with locally produced, lower-priced editions, specifically identifying piracy as one reason official and affordable products are important. Kodansha, DNP and Indian partner IJ Kakehashi Services established a joint venture called Kodansha India in Delhi to market, manufacture and publish Kodansha content for Indian readers. The strategy is straightforward: make legitimate manga easier to obtain and less expensive, while building a new commercial market.
Kodansha is also pushing further into global events, digital manga, anime, games and licensing. Its own corporate material says the company now reaches audiences in more than 40 countries and has identified global expansion and technology as central to its future. That makes the controversies harder to dismiss as isolated public-relations problems. A phishing breach touches data governance. The Shimizu dispute touches creator relations. The Watanabe judgment touches editorial standards. K MANGA complaints touch consumer trust. And the Cloudflare litigation shows how aggressively Kodansha is willing to defend its intellectual property.
The most important conclusion is therefore not that Kodansha is a criminal enterprise. The evidence does not support that claim. It is that one of Japan’s most powerful cultural companies is entering a new phase in which the standards expected from it are much broader than producing bestselling manga. Readers expect reliable products and transparent digital services. Creators expect professional working conditions and proper credit. Consumers expect their information to be protected. And journalists and publishers alike are expected to substantiate serious claims before putting them into print.
Kodansha’s influence means mistakes can travel far beyond a single defective book or an unhappy creator. Its stories reach millions of people, its digital platforms collect information from users, and its licensing business connects Japanese creators with global audiences. The company has shown that it will fight hard to protect the intellectual property that makes that ecosystem valuable. The harder question now is whether Kodansha can apply the same level of care to the people, information and readers that make the ecosystem possible. That is where the publisher’s next chapter will ultimately be judged.
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