Requirements for going to Japan for a master's degree: Are 1-and 4-year undergraduate graduates eligible for postgraduate study? Undergraduate graduates are required to hold valid diplomas and degree certificates. 1, 2 years. The master's degree in Japan is called friar, which is a two-year program. However, international students cannot apply directly. They must study the postgraduate courses for half a year, that is, the preparatory classes and the auditees. So I graduated in 2.5 years when I went to Japan to study for a master's degree. ?