2025JapanChatGPT
BBC Travel reported on 29 September 2025 that a travel blogger and her husband used ChatGPT to plan a sunset hike up Mount Misen on Itsukushima (Miyajima) in Japan earlier that year. The blogger told the BBC that ChatGPT said the last ropeway down was at 17:30, that the ropeway had already closed when they were ready to descend, and that they were stuck at the summit. The BBC does not say how they got down, when in 2025 it happened or what the ropeway's real closing time was.
Core concern Low reported severity
AI involvement reported · Causal attribution alleged · 2 sources, 1 underlying account · Added 29/09/2026
27 Jan 2026 to 28 Jan 2026JapanChatGPT (reported)
Sankei Shimbun reported on 10 June 2026, and NTV on 13-14 June, that the Tokyo Metropolitan Police Department's juvenile crimes division had arrested five high-school students on suspicion of injury and attempted extortion. According to the police account, late on 27 January 2026 a suspect who had previously dated a 17-year-old high-school boy invited him to a public square in Hachioji, where the group accused him of having touched her younger sister, assaulted him and broke his nose, and then told him to raise 150,000 yen, borrowing from his parents or friends if necessary. About ten people were present. Police believe the amount came from ChatGPT: one of them entered terms such as 'sexual harm to a child', and the chatbot displayed a minimum settlement of 150,000 yen. No payment is reported. Shukan Josei PRIME reports that four of the five admit the allegations and one partly denies them. The allegations are untested.
Core concern Medium reported severity Involving minors Criminal Charges
AI involvement reported · Causal attribution alleged · 3 sources, 1 underlying account · Added 29/09/2026
1 Jul 2024 to 30 Sept 2025Event location unknownUnidentified voice-cloning tool
Kenjiro Tsuda, a Japanese voice actor known for roles in Jujutsu Kaisen, sued the operator of TikTok in the Tokyo District Court in November 2025, seeking removal of videos he says use a generative-AI imitation of his voice without permission. According to his complaint, as reported by Jiji Press, Nikkei and the Asahi Shimbun, an account run by an unidentified person posted at least 188 short videos on urban legends, the occult and trivia between July 2024 and September 2025, narrated in a voice modelled on his; the account had about 210,000 followers, videos averaged 1.47 million views, and his side says the poster earned 500,000 to 750,000 yen a month from TikTok's view-based payments. Viewers commented that the voice sounded like him. He argues this infringes his right of publicity and the Unfair Competition Prevention Act by passing the videos off as his narration. TikTok's operator denies that the voice is shown to be his, calls it a generic male voice, says the account and videos were deleted after the suit was filed and asks for dismissal; the poster reportedly said online that the voice was made by training AI on a friend's voice. It is described as Japan's first lawsuit over AI imitation of a voice, with judgment due on 30 September 2026.
Core concern Low reported severity Lawsuit Ongoing
AI involvement reported · Causal attribution disputed · 4 sources, 2 underlying accounts · Added 28/09/2026
15 Jun 2025JapanChatGPT
A Japanese neurologist and father of three developed grandiose and paranoid delusions over months of ChatGPT use, which he says the chatbot consistently affirmed. Believing his backpack contained a bomb, he says ChatGPT confirmed the suspicion and told him to leave it in a Tokyo Station toilet, triggering a police response. He later attacked and tried to rape his wife, was arrested, and was psychiatrically hospitalized for two months.
AI relation under review Critical reported severity Media Coverage
Legacy assessment: credible · Causal attribution alleged · Added 10/08/2026
10 Mar 2025JapanUnidentified image tool
On 4 June 2026 the Nagoya District Court sentenced a 35-year-old former Nagoya municipal elementary-school teacher to three years and six months in prison. Prosecutors had sought six years. He was one of seven current and former teachers from five prefectures charged over a group chat in which members shared secretly filmed images of girls. His offences included secret filming and sharing, and, under the child-pornography law, possessing two generative-AI images showing two real girls apparently naked. According to the police and the judgment summary, he sent photos of the girls from the school where he taught to another member of the group, who made the images on an AI image-editing website. The teacher kept them on his phone, and one was shared in the chat. The judge found the images realistic enough to be mistaken for photographs of the girls. Jiji called it the first case in Japan applying the law to possession of AI-generated sexual deepfakes, and Kyodo called it apparently the first such court finding. A lawyer and a former judge argue the law was stretched.
Core concern High reported severity Involving minors Criminal Charges
AI involvement supported · Causal attribution supported · 9 sources, 8 underlying accounts · Added 14/06/2026