Japan is deliberating whether to allow North Korea's participation in the 2026 Asian Games in Nagoya, amid efforts to balance sports diplomacy with security concerns. The consideration follows North Korea's expressed interest in joining the event, potentially marking a rare instance of engagement between the two nations. This decision could influence broader regional relations in East Asia.

Great Britain secured a victory over Japan in the quarter-finals of the 2025 Billie Jean King Cup Finals, advancing to the semi-finals with standout performances from their players. The match, held in Seville, Spain, highlighted strong singles and doubles play that propelled the British team forward in the prestigious international tennis competition.

Pakistan's Arshad Nadeem claimed gold in the javelin throw at the World Athletics Championship on September 17, 2025. His throw set a new personal best and secured his place among top athletes. The event highlights growing talent in South Asian athletics.

Japanese researchers announced on September 6, 2025, a breakthrough in materials science by doubling the fatigue resistance of steel. This advancement could lead to longer-lasting infrastructure and machinery. The development was shared in recent science updates, highlighting potential industrial applications.

Storms have hit Japan, as detailed in recent climate hazard reports. These weather events have led to potential disruptions across the country.

Artists KK and WD announced their September 2025 concert schedule on September 8, 2025. Dates include performances on September 11, 19, 23, and 28 at various venues.

Shizuoka Prefecture in Japan experienced record-breaking rainfall on September 5, 2025, leading to the issuance of disaster alerts by local authorities. The heavy downpour caused flooding risks and prompted evacuations in affected areas.

On September 9, 2025, Red Hat announced the Summit Connect 2025 Tokyo event, set for October 8 at the Akasaka Intercity Conference in Tokyo. The event will feature Chris Wright and focus on emerging infrastructure trends and AI technologies.

Japanese Prime Minister Shigeru Ishiba resigned on Sunday, triggering the Liberal Democratic Party to prepare for selecting a new leader. The resignation reflects internal party pressures and recent political developments.

Japan recorded a new high temperature for September at 36.7°C in Motoyama, amid widespread extraordinary heat. This event contributes to discussions on accelerating global warming effects. Weather experts noted it as part of ongoing climate trends.

Heavy rains in Shizuoka, Japan, led to a disaster alert being issued. The record-breaking precipitation caused potential risks of landslides and flooding in the region.

Japanese researchers doubled the fatigue resistance of steel, enhancing material durability. The achievement was reported on September 6, 2025. This could benefit construction and manufacturing.

Japanese Prime Minister Shigeru Ishiba decided to resign to prevent a split in the Liberal Democratic Party. This move aims to maintain party unity. A leadership transition is expected soon.