Title: Japan–South Korea relations
Content:  After the division of Korea, Japan and South Korea established diplomatic relations in December 1965, under the Treaty on Basic Relations between Japan and the Republic of Korea, with Japan recognizing South Korea as the only legitimate government of the whole Korean peninsula. Japan and South Korea are neighbors, and they are both main allies of the United States in East Asia. Despite this, the relationship between the two states has greatly deteriorated in recent years, characterized by strong mutual distrust and a number of disputes. These disputes include: territorial claims on Liancourt Rocks (Takeshima or Dokdo), Japanese prime ministers' visits to Yasukuni Shrine, differing views on Imperial Japan's treatment of colonial Korea, and Japan's refusal to negotiate Korea's demands that it apologize or pay reparations for mistreatment of World War II comfort women from Korea. The Diplomatic Bluebook of Japan by the Ministry 
Title: History of Japan–Korea relations
Content:  is still in effect, and the cease-fire line of that year remains the boundary between North and South. Diplomatic relations between Japan and South Korea were established in 1965. In the early 2000s, the Japanese–South Korean relationship soured when the Japanese Prime Minister Junichiro Koizumi visited the Yasukuni Shrine every year during his term. Furthermore, conflicts continue to exist over claims of the Liancourt Rocks (known in Korea as "Dokdo") – a group of small islets near the Korean island of Ulleungdo and the Japanese Oki Islands. Bilaterally and through the Six-Party Talks, North Korea and Japan continue to discuss the case of Japanese citizens abducted by the North Korean government during the 1970s and 1980s, although there 
Title: South Korea
Content:   Korea and Japan have had difficult relations since ancient times, but also significant cultural exchange, with Korea acting as the gateway between Asia and Japan. Contemporary perceptions of Japan are still largely defined by Japan's 35 year colonization of Korea in the 20th century, which is generally regarded in South Korea as having been very negative. Japan is today South Korea's third largest trading partner, with 12% ($46 billion) of exports in 2016. There were no formal diplomatic ties between South Korea and Japan directly after independence the end of World War II in 1945. South Korea and Japan eventually signed the 
Title: History of Japan–Korea relations
Content:  At the end of World War II, Korea regained its independence after 35 years of imperialist Japanese rule. Per the Yalta Conference agreements, Soviet forces accepted surrender of Japanese forces in northern Korea above the 38th parallel, and U.S. forces south of that line. Korea was then divided into Soviet (North Korean) and U.S. (South Korean) spheres. South Korea refused diplomatic and trade relations with Japan, using tensions with Japan to rally support for the South Korean government. The early ROK (Republic of Korea; South Korea) government derived its legitimacy from its opposition to Japan and North Korea, portraying South Korea as under threat from the North and South. The diplomatic relationship between Japan and South Korea was established in 1965, when the Treaty on Basic Relations was signed; Japan subsequently recognized the Republic of Korea (the official name of South Korea) as the only legitimate government on the Korean Peninsula. As such, North Korea does not have official diplomatic ties with Japan.
Title: Japan–South Korea trade dispute
Content:  Japan, according to data from Korea International Trade Association. On the other hand, Japan had export dependency on South Korea for these three materials at 22.5%, 11.6%, and 85.9%, respectively. The two countries established diplomatic relations in December 1965, following the signing of the normalization treaty in June of the same year when Japan recognized South Korea as the only legitimate government of the whole Korean Peninsula. As the relations continued to develop over the next few decades, both countries became two of the strongest allies of the United States in Asia, to counter the influence of China, Russia, and North Korea. However, their relations have been negatively impacted by many ongoing disputes, such as the Liancourt Rocks dispute (known as Dokdo in Korean and Takeshima in Japanese) and differing interpretations on Imperial Japan's treatment of the people in then-colonial Korea.
Title: Foreign relations of South Korea
Content:  in South Korea Park Chung-hee concluded the Treaty on Basic Relations between Japan and South Korea As a result, Japan considered South Korea to be the legitimate successor of its rule over the Korean Peninsula. South Korea's trade with Japan was US$892.1 million in 2008, with a surplus of nearly US$327.1 million on the Japanese side. Japanese and South Koreans firms often had interdependent relations, which gave Japan advantages in South Korea's growing market. In 1996 FIFA announced that the South Korea-Japan would jointly host the 2002 FIFA World Cup. The next few years would see leaders of both countries meet to warm relations 
Title: Japan–South Korea relations
Content:  The, a document published by the Japanese Ministry of Foreign Affairs in its 2018 version, in the section relevant to relations with South Korea, stated simply: "Their good relationship is essential for peace and stability in the Asian-Pacific region", removing the foregoing part from the previous year: "The Republic of Korea (ROK) is Japan's most important neighbor that shares strategic interests with Japan." The tone has seen a continuous downward trend from the peak in 2014 which went as "The Republic of Korea (ROK) and Japan are the most important neighboring countries to each other, which share fundamental values such as freedom, democracy, and respect for basic human rights." On March 2, 2015, the document was revised to read to 
Title: Japan–South Korea relations
Content:  reason why the governments of South Korea and Japan intended to sign it was both South Korea and Japan are U.S. allies and have their own military alliances with the United States, and so were strongly pressured by Washington. In November 2016, despite facing criticism from all sides in South Korea, the two countries signed the (GSOMIA), which means Japan and South Korea share military information about North Korea without the US. Japan's moves toward military rearmament have unnerved Seoul where Japan is seen as a potential military threat—many South Koreans regard Japanese militarization as a greater concern than Chinese militarization. Likewise, Japan perceives South Korea to be a potential 
Title: Japan–South Korea relations
Content:  Foreign Affairs of Japan in 2018 removed the phrase present in the previous year referring to the ROK as "Japan's most important neighbor that shares strategic interests with Japan." In 2021, South Korea dropped its description of Japan as a "partner" in its latest defense white paper. These tensions have complicated American efforts to promote a common front against Chinese threats in the region. According to a 2014 BBC World Service poll, 13% of Japanese view South Korea's influence positively, with 37% expressing a negative view, while 15% of South Koreans view Japanese influence positively, with 79% expressing negatively, making South Korea, after China, the country with the second most negative perception of Japan in the world. Due to the highly antagonistic nature of the relationship, the two countries have been described as being in a state of "cold war" by various media commentators.
Title: Japan–Korea disputes
Content:   Korea and Japan had a long history between each other as immediate neighbors and at the start of the 20th century Korea was ruled by the Imperial Japanese government starting with the Japan–Korea Treaty of 1910. South Korea and North Korea both obtained independence with the Japanese Instrument of Surrender in 1945 which ended World War II. Relations between Japan and South Korea began with the signing of the Basic Treaty which normalized relations between the two nations, after which economic links expanded dramatically. Today, Japan and South Korea are major trading partners, and many students, tourists, entertainers, and business people travel between the two countries. Despite strong economic cooperation between the two countries, ongoing territorial and historical issues exists between the two nations. In contrast, relations between Japan and North Korea are not yet normalized, and there are ongoing historical, geopolitical and nuclear issues between the two nations.

Question: In what country is Japan–South Korea relations?
Answer: Japan.
State of Japan.
Land of the Rising Sun.
Nihon.
Nippon.
JP.
Nippon-koku.
Nihon-koku.
JA.
JPN.
jp.
JAP.
Ja.
Jap.