Tokyo police detained 39 minors during a two-day nighttime operation around the "Toyoko" area of Kabukicho in Shinjuku, with 17 of them, or roughly 40%, found to have previously overdosed on medication. (News On Japan)

The first hearing in a lawsuit seeking the return of 279 sets of Ainu ancestral remains from the Japanese government was held on September 4, marking the first time an Ainu group has taken the state to court over the return of human remains. (News On Japan)

A 58-year-old man has been arrested on suspicion of setting fire to a home in Tokyo's Adachi Ward on September 4, injuring an 81-year-old woman, as police investigate whether he was involved in six suspicious fires reported in the area over about two weeks. (News On Japan)

A woman in her 60s died after her car was submerged in a flooded underpass in Iwaki, Fukushima Prefecture, as record rainfall caused widespread flooding, landslides and transport disruption across Kanto and surrounding areas on September 7, with authorities warning that further rain was expected during the evening commute. (News On Japan)

Three people died and two others were injured in a suspected arson and stabbing at a cake shop in Motosu, Gifu Prefecture, where the 66-year-old female owner had gathered with nine former junior high school classmates on September 5, with police investigating whether a 70-year-old company executive who was apparently not invited to the gathering was involved. (News On Japan)

Police are investigating whether one of 11 people gathered at a cake shop in Motosu, Gifu Prefecture, was involved in a fire that left two people dead and three others injured on the night of September 5, after an emergency caller reported that someone had been stabbed and gasoline had been spread before the blaze broke out. (News On Japan)

Prince Hisahito, the only son of Crown Prince Akishino and Crown Princess Kiko, turned 20 on September 6, as he continues to take part in a growing range of official duties as an adult member of Japan's Imperial Family. (News On Japan)

A 52-year-old restaurant operator was sentenced to 17 years in prison on September 4 for killing his former girlfriend by repeatedly stabbing her in the abdomen and back with two kitchen knives at his home in Higashiosaka, Osaka Prefecture. (News On Japan)

Young people recruited into illegal "dark part-time jobs" through social media and friends are increasingly becoming involved in fraud and violent robberies across Japan, with interviews at a juvenile training school revealing how the promise of easy money, a desire for recognition and fear of criminal groups can gradually leave them feeling unable to escape. (News On Japan)

Tokyo police are investigating the possibility of a serial arson spree after six suspicious fires were reported within about two weeks in the same neighborhood of Adachi Ward, leaving an 81-year-old woman with burns and damaging homes, political party posters, a vending machine and a bicycle. (News On Japan)

A Chinese man who received a suspended prison sentence and had his driver's license revoked after striking four elementary school students while driving drunk in 2025 admitted at his first trial on September 3 that he repeatedly drove without a license while still on probation. (News On Japan)

The Imperial Household Agency is considering holding a significantly scaled-down funeral for former Emperor Akihito at the Imperial Palace in Tokyo, reflecting his wishes to minimize disruption to the lives of the public. (News On Japan)

A 17-year-old high school girl was arrested in Omihachiman, Shiga Prefecture, on September 2 after allegedly stabbing her 49-year-old father in the neck with scissors during an altercation at their home, with the father later dying at a hospital. (News On Japan)

Three men have been arrested on suspicion of attempting to defraud a flood victim in Chiba Prefecture of 3.2 million yen by falsely claiming that his electrical breaker panel and flooring needed urgent repairs, in a type of scam that has surged nationwide in recent years. (News On Japan)

A large fire that swept through a shopping district near Ise Jingu in Mie Prefecture was extinguished at 11 a.m. on September 2, about 44 hours after it broke out, after damaging 58 buildings across an area of approximately 4,300 square meters. (News On Japan)

Chiba Prefectural Police have arrested a 71-year-old former junior high school principal on suspicion of committing indecent acts against an elementary school girl at a welfare support facility in Yachimata, Chiba Prefecture, in May. (News On Japan)

Okinawa police have arrested a 32-year-old U.S. citizen on suspicion of setting fire to a lodging facility in Chatan and attempting to kill 18 guests who were staying inside, following a blaze that left one man seriously injured on August 15. (News On Japan)

The traditional whale and dolphin drive hunt in Taiji, Wakayama Prefecture, opened for the season on September 1, with fishermen capturing about 200 bottlenose dolphins during the first hunt. (News On Japan)

Police forces across Japan are struggling to recruit enough officers, with the number of people taking police recruitment examinations falling to less than half the level of a decade ago and concerns growing that persistent staffing shortages could eventually affect public safety. (News On Japan)

A fire broke out at a shopping arcade near Ise Jingu in Ise, Mie Prefecture, on the afternoon of August 31, sending red flames and thick black smoke into the air as firefighters continued battling the blaze with no immediate prospect of bringing it under control. (News On Japan)