This article explores the complex relationship between Koreans, Chinese, and Japanese in terms of their history, culture, language, and genetics. It reveals that while genetically speaking Koreans are closer to Chinese than they are to Japanese, when it comes to nationality or ethnicity many modern day Koreans feel a sense of connection with all three countries. Additionally, there is still a large population of ethnic Koreans living within both mainland China and Japan who maintain traditional customs such as eating kimchi or celebrating holidays like Chuseok.