I dont think there is anything wrong with having a preference and not settling for anything less.If the guy is set on marrying a Japanese/Okinawan girl,then so what? thats his cup of tea.
I get so tiresome of people trying to come off like the morale high ground when it comes to race preferences."love everyone,you should be color blind when it comes to love blah blah blah"...look,NOBODY is blind when it comes to love,everyone has thier preferences that they demand from the opposite sex.To some it might be brunettes,or blondes,to others it might be rich guys,spunky women or people that drive nice cars...whatever it is,people have thier certain preferences that they are not willing to compromise on.
If a guy only wants to marry a Japanese girl because that is what makes him happy,then who are we to tell him that that is not the way to live and he should settle for something less? yes love the women your with because of WHO she is,but you dont have to give up Japanese girls or go for a differnet race to get a girl that you connect with emotionally.Its not a "one way or the other" type of situation.
if you want a Japanese wife...GO FOR IT! never let anyone tell you its not right or its cruel to exclude other races,because its not.There will be plenty of other guys out there looking for white girls,latin girls,black girls or korean girls etc..you have NO obligation to give equal time to all races,if your preference is Japanese,go for it.Dont settle.
just my 2 cents.