I agree with dragonbone you can smoke anywhere in a bar or restaurant but I recommend try not to smoke on the street. I have a member on my forum who arrested by police recently and had to take urine tests because an officer suspect his PV is using it for illegal drugs. He also told that his PV and liquid is confiscated even results are clean.
I'm saying you are fine to smoke ecig in Japan. I smoke mine at my office. To avoid trouble, just be careful when you smoke on the street.
I'm saying you are fine to smoke ecig in Japan. I smoke mine at my office. To avoid trouble, just be careful when you smoke on the street.