Even then. The advice works both ways.
By all means, do go to Japan, but be realistic about it. To be accepted in a masters degree course in law, you will need to have a background in Japanese law or at the very least a background in Continential law and Anglo-American law which is what their system is based on. You will also have to have to pass the N1 proficiency level in Japanese to secure a job as a qualified professional down there.
Are you really up for that?
So what would you advise me to study in Japan??
As Saras said, your current field of study is probably the only thing you'd be able to study in Japan at present, assuming it's something taught in universities over there. The alternative is changing your degree course completely, and spending a couple more years studying at home before then going to Japan for a year to study your new subject there. Japanese is your best bet, of course, but you'll have to do some research and see what you'd be able to do, since I have no idea.
Law is definitely unrealistic, though. Not to mention the difficulty of teaching yourself Japanese - I'm studying it full-time as part of my degree, and it's pretty tough; I can only imagine that trying to do it by yourself in your spare time would be a million times worse.
