My friend, if the continuation of the marriage is dependent on moving to Japan to work, forget it.
You will be treated like $hit there, regardless of whether or not you're married to one. Marginally better received socially, but professionally, you'll be the end of the line.
The Japanese workers are paid much more, receive more vacation than foreigners, and your opinion will be disregarded even though you're PIC. If you're an FO, you won't even be looked at, let alone consulted.
As KM says on another thread, the Japanese act as though they don't want foreigners there, but they desperately need them. They can't get over their prejudices, regardles of the commerical reality.
I would not encourage anybody to go to Japan to work as a pilot, or anything else for that matter, though my experience is limited to flying there.
For your own mental and physical well being, don't do it to yourself......unless you're into masochism, of course.