Going to Japan for graduate school means going to Japan for a master's degree. The master's program in Japan is a two-year research-oriented master's program and requires a master's thesis. Japan also has a one-year master's degree, such as MBA or LLM courses. To put it simply, it takes two years to go to Japan for graduate study. However, just studying in Japan for two years is not enough. Because transition period and adaptation period are needed, it can also be understood as preparation period.