Mira,
"But you already have a small... " without the "brain" would have been a lot better. Leaves the room for readers' imagination
Anyway, I appreciate you prefer Japanese guys (Yay!) but Japanese guys want to be treated as an individual, not as a Borg like creature... They would much appreciate if you liked the person, not his race.
It's good you have the yearning for another culture. The best thing I have done in my life is coming to the states from Japan. It really opened up my mind. So yeah keep yearning for it but be practical. It sounds like you are very young. I hope you'll have a chance to go to Japan and have an opportunity to experience 2 totally different cultures which the majority of American and Japanese people don't have.