A growing wave of cyberattacks across Japan has raised concerns over the possible use of Chinese-developed artificial intelligence in hacking operations, with personal information belonging to tens of thousands of police employees potentially exposed and major companies forced to suspend online services, while cybersecurity experts warn that slow decision-making within Japanese organizations is allowing damage to spread.
Japan's H3 rocket successfully launched the Martian Moons eXploration (MMX) spacecraft from the Tanegashima Space Center in Kagoshima Prefecture on the morning of October 20th, placing the probe into its planned orbit in the first stage of a mission to collect samples from one of Mars' moons and return them to Earth.
Police in Kochi Prefecture have released footage of a group of teenagers riding motorcycles recklessly through Kochi City on January 1st, 2026, in a New Year's Day incident known as a "first sunrise motorcycle rampage," with 18 people aged between 15 and 19 arrested or referred to prosecutors for suspected violations of the Road Traffic Act.
Empress Emerita Michiko celebrated her 92nd birthday on October 20th, receiving birthday greetings from Emperor Naruhito, Empress Masako and other members of Japan's imperial family at her residence in Tokyo, as concerns grow over her declining physical strength and signs of fatigue.
The deputy mayor of Saijo City in Ehime Prefecture died after being crushed beneath a festival float weighing approximately 3 tons while participating in a traditional autumn festival on October 17.
Princess Aiko, the only daughter of Emperor Naruhito and Empress Masako, arrived in Tottori Prefecture on October 19 for her first visit to the region, where she is scheduled to attend a national disaster prevention conference and a symposium on disaster preparedness.
Motorcycle owners across Japan can now choose their preferred license plate numbers under a new system introduced by the Ministry of Land, Infrastructure, Transport and Tourism on October 19th, with popular numbers allocated by lottery and applications costing between 2,500 and 3,000 yen.
Temperatures fell to their lowest levels of the season across much of Japan on the morning of October 18, with Rikubetsu in Hokkaido recording minus 4.3 degrees Celsius, the country's lowest temperature so far this autumn, before sunshine brought warmer conditions during the day and some areas experienced unseasonably hot weather.
Kyoto City expects revenue from its accommodation tax to more than double to approximately 13.2 billion yen this fiscal year following a substantial increase in the maximum nightly levy to 10,000 yen, as the city seeks to address overtourism and ease the pressure that millions of visitors place on residents and public infrastructure.
The Nada Fighting Festival, known for its spectacular collisions between massive portable shrines weighing around two tons, drew large crowds to Himeji, Hyogo Prefecture, on October 15, as participants repeatedly slammed the heavy structures into one another in a traditional ritual believed to please the gods.
Atsumi Harasawa, a 59-year-old lawyer making her first bid for mayor, won Yokohama's mayoral election on October 18, defeating former Mayor Takeharu Yamanaka, whose resignation over allegations of workplace bullying prompted the vote.
Prime Minister Sanae Takaichi faced renewed political pressure on October 19 as fresh opinion polls showed declining public support following a ministerial resignation, while her government signaled it could issue additional bonds to finance a planned two-year consumption tax exemption on food beginning in April 2027.
Prime Minister Sanae Takaichi has accepted the resignation of Agriculture, Forestry and Fisheries Minister Kazuo Yana following controversial remarks about cutting government funding to municipalities that did not support him in an election, ending nearly two weeks of mounting criticism and leaving unresolved allegations of political pressure and election law violations.
Japan's new rice harvest is reaching stores at significantly lower prices, with initial trading prices for the 2026 crop falling 42% from a year earlier and some supermarkets selling freshly harvested rice for around 2,000 yen per 5 kilograms, creating an unusual situation in which new rice is cheaper than older stocks.
A Japanese semiconductor research consortium involving Rapidus and Fujifilm has announced plans to develop an artificial intelligence system for processing medical images using cutting-edge 2-nanometer chips, aiming to significantly improve processing speeds while reducing power consumption to support real-time diagnosis and surgical procedures.
Three national anthem mix-ups occurred on the same day at the ongoing Aichi-Nagoya Asian Para Games, with Iran's anthem mistakenly played during medal ceremonies for Chinese Taipei and Mongolia, while South Korea's anthem was played instead of China's before a women's sitting volleyball match.
Tokyo's Metropolitan Police Department has released a warning video highlighting the dangers of illegal part-time jobs advertised on social media, showing how young people can be drawn into organized crime through promises of easy money before being threatened with violence if they attempt to escape.
Tokyo stocks rebounded on October 21, with the Nikkei 225 closing 545.82 points higher at 64,621.24, a gain of 0.85%, as stronger U.S. equities, renewed buying in technology shares and encouraging Japanese export figures helped the market recover from two consecutive sessions of losses.
Japanese banks and securities firms are moving to stop using facial photographs from driver's licenses to verify customers opening accounts online, following a series of personal information leaks that have raised concerns about fraudulent account applications.
Japan's Nikkei 225 Stock Average closed at 64,075.42 on October 20th, falling 841.28 points, or 1.30%, as renewed selling in semiconductor and artificial intelligence-related shares, rising oil prices and concerns over inflation pushed Tokyo stocks lower for a second consecutive session.
Nearly one in three large companies in Japan have experienced a data leak or a suspected breach, according to a survey released by Teikoku Databank on October 19th, highlighting growing concerns over corporate information security as unauthorized access incidents continue to affect businesses across the country.