Tokyo Court Ties Voice To Publicity Rights In Tsuda AI Suit
The court recognized voice as a protectable publicity right even as the practical claim collapsed, so the ruling's effect lands on future generative AI cases rather than on the videos Tsuda wanted gone.
Key Facts
- The Tokyo District Court dismissed Kenjiro Tsuda's lawsuit against TikTok's operator on Wednesday over videos that allegedly used AI to imitate his voice.
- Tsuda filed the lawsuit in November 2025 seeking removal of the videos, which TikTok's Japan operator said had already been deleted.
- The disputed TikTok account posted at least 188 videos on urban legends and conspiracy theories between July 2024 and September 2025.
- Revenue from the videos was estimated at 500,000 to 750,000 yen (about US$3,000 to US$4,500) per month, according to information the account owner posted elsewhere.
- Presiding Judge Aya Takahashi found unauthorized use of a performer's voice can infringe publicity rights when the voice has commercial appeal and is used to exploit that appeal.
Reporting from 2 sources: Anime News Network, OtakuKart Anime.
The Tokyo District Court dismissed a lawsuit voice actor Kenjiro Tsuda filed against TikTok's operator over videos that allegedly used AI to imitate his voice, according to a ruling handed down Wednesday. Tsuda had sought removal of the videos, but the court found they had already been deleted. The Singapore-based company that runs TikTok in Japan said the videos were taken down after the suit was filed in November 2025, arguing Tsuda no longer had a legal interest in the case. The filing described an unidentified account owner who posted at least 188 videos on urban legends and conspiracy theories between July 2024 and September 2025, with revenue estimated at 500,000 to 750,000 yen (about US$3,000 to US$4,500) per month. Tsuda's team argued the narration imitated his smooth, low-pitched voice and misled viewers. Presiding Judge Aya Takahashi found unauthorized use of a performer's voice can infringe publicity rights when the voice has commercial appeal and is used to exploit it.
- Defense argument: the account owner said on an outside website the narration was a "universal male voice" trained on a friend's voice. The company's lawyers said there was no confusion and no violation of the law.
- Legal basis: Tsuda's side sought removal under the Unfair Competition Prevention Act and the right of publicity. The court found a recognizable voice comparable to a person's likeness.
- Anime fans know him as: Kento Nanami in Jujutsu Kaisen.
- Video content: the videos covered urban legends, occult topics, and trivia.
- Legal gap: Japan has no statute that establishes a standalone "voice right."
- Earlier guidance: a Ministry of Justice expert panel issued guidelines in August on interpreting existing laws for voice protection, saying voice actors and actors are protected under publicity rights and that generative AI providers could face joint liability depending on the level of infringement.
- Disagreement: OtakuKart called the ruling "the country's first such judgment" and said the result was "a partial victory for Tsuda."
Synthesized by Yomimono from the 2 cited sources below, including Japanese-language reporting where cited, then editorially reviewed before publishing.
Sources
- Anime News Network News Voice Actor Kenjirō Tsuda's TikTok Lawsuit Dismissed After AI-Voiced Videos' Removal
- OtakuKart Anime Jujutsu Kaisen Voice Actor Kenjiro Tsuda’s AI Voice Lawsuit Gets Landmark Ruling as Japan Court Recognizes Voice as a Publicity Right, But Rejects His TikTok Video Removal Request