[vulgarshudder]

Uhhh I dunno since I've never married someone before lol.

Are you going on your future wife's koseki? I have no idea how it works so please enlighten me! Also why do you want a Japanese name/alias? Any particular reason?

The only thing constructive I can say is...you will have to go pick up your gaijin card when it's ready at the shi/kuyakusho.