[movedx]

It'll be hard, but you'll need to get to N2 grade Japanese skills (business level) to be taken seriously. Look at Japanese Pod 101 - it's pretty good.

Don't expect to ever get to N1. Virtually impossible.

Also never expect to become a Japanese citizen (i.e. get a passport) or even be accepted in society at large - it won't happen.

I know everything I'm saying is negative and just makes me look like a party pooper, but I think you deserve straight forward advice on this front.

Good luck.