Full Breakdown
Tokyo Court Declares Human Voice Protected Under Publicity Rights in AI-Clone Case
By Drooid · · How we work
Core Event: Court Ruling on AI-Generated Voice Clone
On September 30 the Tokyo District Court held that a person’s voice is subject to Japan’s publicity-rights framework. The decision arose from a lawsuit filed by veteran anime voice actor Kenjiro Tsuda (known for “Jujutsu Kaisen” and “Yu-Gi-Oh!”) against TikTok, which he alleged hosted videos that used an artificial-intelligence (AI) clone of his “lustrous” baritone. While the court dismissed Tsuda’s request to compel TikTok to remove the videos—because the anonymous account had already been deleted—it affirmed that unauthorized commercial use of a performer’s voice can infringe publicity rights.
Background & Context
The case is the first in Japan to test legal protection for vocal identity against generative-AI replication. AI-generated voice cloning has become a global concern for performers, prompting the Japanese Ministry of Justice to issue non-binding guidelines in August 2026 that treat voices as “symbolic of one’s personality” and place them under existing publicity-rights and unfair-competition statutes. The lawsuit, filed in late 2025, targeted an anonymous TikTok account that paired AI-generated narration with images of urban legends, occult topics, and conspiracy theories. The account’s profile picture resembled a character voiced by Tsuda, intensifying the claim of misappropriation.
Data & Statistics
- Subscriber count: reports cite “more than 200,000” followers and “about 210,000” followers.
- Video volume: the account posted 188 videos between July 2024 and September 2025.
- Viewership: average of roughly 1.47 million views per video.
- Revenue estimate: monthly earnings projected between ¥500,000 and ¥750,000 (? $3,100–$4,700) (Straitstimes, Japan Times).
Official Statements & Responses
- TikTok’s defense: the platform argued the narration was a “generic male voice” and that any perceived similarity to Tsuda’s voice was subjective.
Conflicting Reports & Gaps
Sources differ on the exact scale of the TikTok account. One set of reports lists more than 200,000 subscribers, while another specifies about 210,000. Revenue estimates range from “upwards of 500,000 yen” to a broader ¥500,000–¥750,000 per month. The number of videos is reported as 188 in the Japan Times, whereas other outlets refer only to “a slew of” videos without a precise count. No source provides the identity of the account’s uploader or the technical details of the AI model used, leaving a gap in understanding the creation process.
Verbatim Quotes
- “It’s something we spend lots of time and money perfecting,” — Yuko Sasaki, executive director, Japan Actors Union “It’s something we spend lots of time and money perfecting,” — Yuko Sasaki, actors union executive
- “You need to constantly feel and adapt while performing your role. That’s something AI can never do.” — Michihiro Ikemizu, veteran voice actor “You need to constantly feel and adapt while performing your role. That's something AI can never do,” — Michihiro Ikemizu, veteran
What's Next
The Justice Ministry’s non-binding guidelines remain advisory; no legislation currently codifies voice-specific protection. Industry groups, including the Japan Actors Union’s “No More” campaign, continue to lobby for statutory reforms. Observers note that the court’s acknowledgment of voice as a protected element may influence future disputes involving AI-generated performances, both in Japan and internationally.