[Nyororin]

Just a random comment...

Japan is pretty lax on marriage between Japanese and "not suspicious" countries. You know, the ones that often have people getting married for less than honest reasons in order to move to Japan.
There is very little you will have to prove in order to marry. They didn`t ask me for much of anything - certainly nothing to the extent of things you listed. Unless you need to REALLY prove the validity of your marriage, I highly doubt most of it will be necessary.

You say you plan to stay with her family for a short time... Will *she* be able to secure an apartment? You will have no income until further down the road, and even with a wad of cash it will be hard to find somewhere that will rent to you without some proven cash flow.
I see problems possibly arising with the length of the stay with the in-laws. It took a month and a half to get my spousal visa after marriage, and another two weeks to change my name.... And then more to change everything else that you have to change after changing your name. All this time, I was unable to work. Unless she has a job set up almost immediately after returning to Japan..... You may run into some serious living situation problems. Just getting married doesn`t grant you permission to work.

Other than that... I would also look into having yourself listed and *maintained* on her juminhyo. I was listed on my husband`s, but somewhere along the line they failed to maintain the listing and it disappeared.