Japan's top government spokesperson says the maritime survey South Korea conducted in Japan's exclusive economic zone near the Takeshima Islands is unacceptable as no prior consent was given.
South Korea controls the islands in the Sea of Japan. Japan claims them.
A Japanese meteorologist says the frequency of localized torrential downpours in Japan has more than doubled in 45 years.
The director of the typhoon and severe weather research department at the Meteorological Research Institute, Kato Teruyuki, published a report on changes in Japan's precipitation patterns between 1976 and 2020.
The relatives of Japanese nationals abducted by North Korea decades ago, have urged Japan's government to help all remaining abductees return home as soon as possible. They also demanded Pyongyang make an early decision to realize the return of their loved ones.
The relatives adopted a resolution listing these requests at a rally on Sunday. Prime Minister Kishida Fumio attended the gathering of roughly 800 people.
Preparations are underway for Japanese Prime Minister Kishida Fumio to give a keynote speech at an Asia security summit to be held in Singapore next month.
Kishida would be the first Japanese prime minister in eight years to attend the Shangri-La Dialogue, which brings together defense and military leaders to discuss Asia-Pacific security issues.
Unseasonable heat gripped much of Japan on Sunday, when some cities in the Kanto region saw the mercury exceed 35 degrees Celsius.
Sunny skies prevailed across many places, bringing temperatures above 30 degrees Celsius to a wide area.
Tens of thousands of people have attended an event that brought together six major summer festivals in Japan's northeastern region.
The Tohoku Kizuna Festival was held for two days through Sunday in Akita City.
The Tokyo Metropolitan Government says it confirmed 2,194 new cases of the coronavirus on Sunday.
The daily tally is down more than 1,100 from a week ago and marks 16 straight days of week-on-week decline.
A three-day intensive search is underway for 12 people who remain missing following the sinking of a tour boat off the coast of Hokkaido, northern Japan, more than a month ago.
The operation began on Sunday, with vessels and aircraft from the Coast Guard and the Self-Defense Forces deployed.
Japanese director Hayakawa Chie's film PLAN 75 has received a Special Mention by the jury for the Camera d'Or, an award for debut feature films, at the Cannes Film Festival.
The movie is set in Japan in the near future, when a government program encourages people aged 75 or older to be voluntarily euthanized as a remedy to the rapidly aging society.
A group of researchers says it has found a new type of Parkinson's disease apparently induced by a different protein from the one known to cause the disease.
Parkinson's disease is a neurodegenerative disorder that causes unintended or uncontrollable movements, such as shaking of limbs or stiffness. It is generally thought that accumulation of an abnormal protein known as alpha-Synuclein in the brain contributes to the disease.
A special Japanese police squad trained and equipped to respond to hostage-taking and other incidents has its origins in the aftermath of terrorist attacks in the 1970s and 1980s by the now-disbanded Japanese Red Army.
The former leader of the militant group, Shigenobu Fusako, was released from prison on Saturday. In 1977, the group hijacked a passenger plane and forced it to land in Dhaka, Bangladesh, and demanded the release of group members from prison.
Shigenobu Fusako, a former leader of the now-disbanded Japanese Red Army militant group, has been released from prison after completing her 20-year term.
Shigenobu, who is now 76 years old, was convicted and sentenced to 20 years in prison for her involvement in the 1974 seizure of the French Embassy in The Hague, the Netherlands.
Japan's Ground Self-Defense Force held its annual live-fire exercises at the foot of Mount Fuji in central Japan on Saturday.
Some 3,300 personnel and 36 tanks and other vehicles took part. The drills were held at the GSDF's Higashi-Fuji training camp in Shizuoka Prefecture.
The Tokyo Metropolitan Government reported 2,549 new cases of the coronavirus in the capital on Saturday.
The figure is down about 900 from a week ago, the 15th straight day of week-on-week decline.