A social media dispute between a 17-year-old high school student from Tokyo's Itabashi Ward and a 16-year-old boy from Edogawa Ward escalated into a planned group fight involving around 30 youths, some of whom allegedly brought weapons including a rusty saw, iron pipes, a special baton and even a shovel. (News On Japan)

A large solar power facility built on a mountainside in Fukushima City is generating reflected sunlight for far longer than originally projected, with a city survey finding that glare at some locations lasted up to 53 minutes per day—more than ten times the maximum duration predicted by the operator. (News On Japan)

A traffic accident that occurred beneath an elevated section of the Meitetsu railway line in Kasamatsu, Gifu Prefecture, on the morning of May 28th claimed the life of a 21-year-old woman who was riding in the front passenger seat of a car. (News On Japan)

Japan's declining population is set to trigger another review of single-seat electoral districts for the House of Representatives, with new census data highlighting widening disparities in voter representation and adding momentum to discussions over reducing the number of lawmakers. (News On Japan)

Health Minister Kenichiro Ueno apologized on May 29th after confusion spread over a new policy that will allow some medical institutions to charge cancellation fees for missed appointments from June, stressing that the fees will apply only in limited cases. (News On Japan)

Fixed-rate mortgage costs in Japan are set to rise again in June as the country's five major banks increase home loan rates in response to higher long-term interest rates, with their flagship 10-year fixed-rate mortgages rising to preferential rates of 3.27% at Mitsubishi UFJ Bank, 3.5% at Sumitomo Mitsui Banking Corporation, and 3.25% at Mizuho Bank. (News On Japan)

Japan is facing a growing transportation dilemma. While a record number of foreign visitors in 2025 has fueled congestion and traffic jams in major cities and tourist destinations, many rural communities are grappling with the opposite problem: shrinking populations and aging residents are making it increasingly difficult to maintain public transportation services. (News On Japan)

Fujitsu announced its long-term management vision through fiscal 2035, unveiling plans to invest approximately 3 trillion yen over the next decade in growth businesses centered on artificial intelligence, quantum technologies, and other advanced fields as it seeks to significantly boost profitability. (News On Japan)

Sanmarc Holdings is betting on Kyoto's global appeal and the growing popularity of gyukatsu among foreign tourists as it accelerates overseas expansion, with President Yuki Fujikawa positioning the beef cutlet chain as a key driver of the restaurant group's inbound tourism and international growth strategy. (News On Japan)

Osaka City will stop accepting new applications for its special-zone minpaku program on May 29 as complaints over noise, garbage disposal and other issues involving guests continue to increase. (News On Japan)

Japan's population stood at 123.05 million in 2025, according to preliminary results from the national census released by the Ministry of Internal Affairs and Communications, marking a decline of 3.097 million people over the past five years. (News On Japan)

Volleyball player Shunichiro Sato, a member of Japan’s men’s national team, was arrested by the Tokyo Metropolitan Police Department on suspicion of possessing marijuana after allegedly leaving a bag containing the drug at a pachinko parlor in Tokyo. (News On Japan)

Japan’s largest space business exhibition opened at Tokyo Big Sight on May 27th, showcasing a growing wave of companies from outside the traditional aerospace sector entering the rapidly expanding space industry. (News On Japan)

Born with osteogenesis imperfecta, a rare disorder that makes bones fragile and prone to fractures, Toshiya Kakiuchi built a company with a mission to transform both the physical and emotional barriers faced by people with disabilities. (News On Japan)

Finland is positioning economic resilience as a core pillar of national security, with Finnish Economic Affairs Minister Sakari Puisto emphasizing closer cooperation with Japan in advanced technologies, supply chain security and dual-use industries during a recent visit to Tokyo. (News On Japan)

A new travel style known as “Otetutabi,” which combines short-term work with tourism, is rapidly gaining attention across Japan as both travelers and local businesses search for new ways to address changing social and economic realities. (News On Japan)

Prime Minister Sanae Takaichi met Philippine President Ferdinand Marcos Jr. on May 28th, agreeing to upgrade bilateral ties as the two countries deepen security cooperation in response to growing regional and global challenges. (News On Japan)

Japanese manufacturing giants are discovering that their legacy data structures cannot support modern AI demands. (News On Japan)

Police in Hyogo Prefecture on May 27th released a new image of a wanted murder suspect believed to have changed clothes multiple times while fleeing after the killing of a mother and daughter in Tatsuno City, raising concerns that he may still be hiding in the surrounding area. (News On Japan)

The National Police Agency announced on May 28th that it will launch a new framework in cooperation with nine financial institutions aimed at rapidly tracing money stolen through special fraud schemes and other scams, as damages from such crimes reached a record high last year. (News On Japan)