i was also a biomed grad, some 5 years ago. im currently doing postgrad in japan in genetics. as mentioned in previous posts, what you end up as your career depends largely on the individual. i have coursemates who took medicine after completing biomed, became scientific officers, lecturers, and many continued postgrad studies overseas or locally. some even left the field totally, becoming insurance agents, musicians, cameramen etc... if you still have strong passion for the field of study, then the former career choices are more plausible. if you expect a high-paying or a 9to5 job, then biomed may not be the right path for you.

1. first thing you need is scholarship or financial support.
2. then you need to find supervisor whose research you are interested in or is willing to take in new students. sometimes potential supervisors can just reject or ignore your application. they may not have the money to support new student or simply they dont want foreign students
3. learn japanese

in this field, it doesnt really matter where you get your phd or msc, its the publication that matters. during your phd research you are expected to submit at least a paper if you plan to continue in the research field