The AI Voice War: Kenjiro Tsuda Sues TikTok Operator

By Katie Williams

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The AI Voice War: Kenjiro Tsuda Sues TikTok Operator

In a landmark legal battle for the voice-acting industry, iconic Japanese voice actor Kenjiro Tsuda (famed for voicing Jujutsu Kaisen’s Kento Nanami and Star Wars’ Kylo Ren) has filed a historic lawsuit against TikTok’s operator in the Tokyo District Court.

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This marks Japan’s first-ever legal challenge regarding the unauthorized use of a celebrity’s voice cloned by generative AI.

The Breakdown of the Dispute

  • The Accusation: Tsuda’s legal team alleges that a TikTok account posted at least 188 videos utilizing an AI voice that perfectly mimics his distinct, deep, and mellow tone. The account amassed 210,000 followers and generated between ¥500,000 and ¥750,000 per month in view-based revenue.
  • The Legal Claim: Tsuda argues this is a direct violation of his publicity rights—the legal right of celebrities to control the commercial exploitation of their identity, name, and likeness.
  • The Defense: TikTok’s operator is pushing back, claiming the audio is simply a “generic male voice” and that Tsuda’s claims are based on subjective, emotional interpretations rather than objective facts.

Why This Case Matters

This lawsuit highlights a massive loophole in current intellectual property laws. Because AI creates entirely new audio files rather than directly copying existing recordings, traditional copyright laws struggle to protect artists.

Signs of Systemic Change: The scale of the issue has already forced the Japanese government to act. In April, the Justice Ministry established an expert panel tasked with clarifying how creators can pursue civil damages for unauthorized AI voice cloning.

The Tokyo District Court’s ruling will likely establish the ultimate legal precedent for how generative AI can interact with human talent, shaping the future of intellectual property in the digital age.