Voice is more than just a professional tool; it is a core element of personal identity. For Megumi Ogata, the legendary voice behind Shinji Ikari in Neon Genesis Evangelion and Yuta Okkotsu in Jujutsu Kaisen 0, the unchecked spread of AI-generated voice clones has become a "heartbreaking" reality. Ogata has issued a direct plea to the Japanese government, urging the nation—which prides itself as a content superpower—to stop being merely a source of training data and start establishing strict rules for voice intellectual property.

The Identity Theft Economy on TikTok

The most critical issue lies in the proliferation of synthetic imitators on platforms like TikTok, where voice actors' performances are cloned to narrate unauthorized content or sold as original work. Ogata expressed deep indignation that anyone can now force an artist to say things they never agreed to, stripping away the emotional labor and creative intent invested in a character.

The problem is not only ethical but financially devastating. According to NPO estimates, approximately 43,000 unauthorized AI-generated videos and images were detected in just two months of 2025, with economic losses for celebrities estimated between 2 and 4.5 billion yen. This occurs as tools for expressive text-to-speech and voice transfer become increasingly sophisticated, making clones nearly indistinguishable from human performances.

Japan's Justice Ministry Steps In

In response to these pressures, the Japanese government is accelerating its legislative framework. An expert committee within the Ministry of Justice has broadly approved a draft report establishing civil liability for the unauthorized use of public figures' voices via generative AI. The proposal suggests that voices be protected under publicity rights, allowing performers to control the commercial value of their vocal identity.

Under these proposed rules, creators who use AI to mislead the public into believing a singer or actor is performing unauthorized work—especially for profit on social media—could be held liable for damages and forced to remove the content. This move aims to fill a legal void that has left voice actors vulnerable, as Japanese courts have yet to issue definitive rulings on vocal rights.

A Global Stand Against Creative Automation

Ogata's struggle is part of a broader global movement. Voice actors such as Wes Johnson and Jennifer Hale, along with the cast of Baldur's Gate 3, have spoken out against studios and modders who use AI to bypass human consent.

While the European Union has already begun enforcing transparency through the AI Act, requiring labels for synthetic content, Japan is focusing on personality rights. The challenge for Tokyo will be balancing technological advancement with the protection of the artists who built its global reputation in anime and gaming.