Mark Johnson <markjohnsonroofing@gmail.com> wrote:
> I am married in USA, if I marry a different spouse in Japan is that illegal?
> 
> I'm not asking about ethics but about the law in Japan.
> 
> Any help or a nudge in the right direction appreciated. 
> 
> Frankie

Sounds like you're not "competent" to marry in Japan:

http://japan.usembassy.gov/mobile//e/acs/tacs-7114a.html