Thank you Caroline
I am now in Japan. But not registered myself in Japan because I was going to live in France. Even this time, I was going back to France. So I have not registered myself anywhere....because I wanted to register in France....
His registration is now in France(I think), not in UK.
He took advantage of my applying for french visa. I needed his papers and we had to go together to the prefecture. He always threatened me "If you do not behave......" So I could not apply for french visa. 90 days were the limit for me to stay in France. At the end, he tried to do what he had to do...but I got too nervous about the time limit and he treated me so badly then I came back to Japan again.
Anyway, my registration is nowhere now(but I can register in Japan immediately) and his registration is in France.
Japanese law about divorce is not helpful at all. France and UK is much better.
I really need the help of an expert who knows french law.