Get your license transfered before you get caught, the police are getting serious here now in Japan compared to years ago...Yes, I have my big bike license and also had a Ducati too. You don't need the paper test as long as you have your car license transfered over already, just the driving test, its hard but I passed on my first attempt. If you are planning on living in Japan for a long time it might be better to take a couple of courses at the local driving school before you take your road test...If your Canadian than changing you license over is really easy compared to if you were from the US, cheers