The Tokyo District Court issued a ruling on September 30, 2026, establishing that a human voice is a legally protected component of personal identity. This decision confirms that the unauthorized commercial use of a person's voice, including through AI cloning, constitutes a violation of publicity rights in Japan.
The case was initiated by voice actor Kenjiro Tsuda in November 2025 against an anonymous TikTok account. The account had utilized AI to mimic Tsuda's voice in 188 videos. Although Judge Aya Takahashi dismissed the specific claims against TikTok because the content had been removed, the court affirmed the legal status of voice protection.
The TikTok account involved had gained approximately 210,000 followers. Its estimated monthly revenue ranged from ¥500,000 to ¥750,000, which is approximately $3,200 to $4,800. This ruling formalizes previous non-binding guidance issued by the Japanese Justice Ministry in August 2026.
Prior to this verdict, Japanese law primarily focused on protecting names and images, leaving voice rights in a legal grey area. The new judicial precedent allows future plaintiffs to cite a court decision when addressing cases of voice misappropriation.
