No, the Tokyo government essentially banned the sale of porn outside of porn shops, and that's about it. Tokyo = 1/47th of Japan. It's like D.C. banning the sale of firearms. The real issue is the whole thing is very vaguely worded, but the whole thing is also quite unconstitutional by Japanese law (article 21, which is essentially the first amendment of the U.S. Constitution) and legal challenges have already been announced, so it isn't going to last either. The Japanese porn industry has become extremely skilled at fighting this kind of moralist busybody bullshit. The internet blows things out of proportion, especially things most people have little to no actual knowledge of.
And with that, I vanish in to the veil of the night again! I'll get you next time, Gadget!