Its Korean. The spoken language is unique to Korea. It is NOT similar to Japanese (the language spoken in Japan.) Unlike Western European languages with a Latin base, the written Chinese shared by many countries in Asia, has the same meaning, but not the same pronunciation! The Korea peninsula is unique in having almost no ethnic minorities, 99.98% ethnic Korean. Hello in Korean is Annyonhaseyo.Total Korean language speakers 87 million. L1 is Korean. 87-89 million Koreans speak. L2 is English, Japanese, Chinese. Korean alphabet is used 80 percent. Chinese characters is used 20 percent.Korean.Some do some dont, but I believe the percentage is quite low. Maybe below 10%.Koreans speak the Korean language, a language isolate (so it isnt directly descended from another language as far as people have been able to tell) that has some relation to Japanese thanks to a very long and conflicted association with Japan.Koreans speak Korean.Korean.(Hangul)