Advantages of having a Japanese residence card: You can skip the foreigner line and use the local line at immigration, allowing for a quick 1-minute entry. Disadvantages of having a Japanese residence card: Since it is a visa that allows you to live in Japan, you cannot receive tax exemptions (even if you are Korean and traveling abroad, you won't be treated differently from Japanese citizens). Additionally, if you have a lot of money, living in Japan is as good as in Korea (excluding taxes).