let's ask ayu..
what blood she has on her! hehe
all i can say that..
MAKE UP technology makes all the possibilities we've been typing down here..
she looks like to an american woman because of her blonde hair and her big round eyes and the sharped/pointed nose.... (i'm kinda repeating myself here..haha

)
well..here's another thought..
maybe ayu's grandmas and grandpas have the american or any other bloods...
because somebody said up there.. that fukuoka is the place where lots of american people staying there during the war zone..and one of ayu's grandmas and grandpas hooked up with some American guys/girls and then they got married..
because.. Japanese people are now mostly looked mix blood to me..
you know..the original japanese people do not have big round eyes or sharped nose...like most japanese people nowadays...
example: Kyoko Fukada, Kumi Koda, and others....
i saw lots of japanese artists..they have the round eyes and sharped noses..
(this is what my father told me..)
*they called the original japanese people, AINU*