[hinacamui]

Coming from an internationally-brought up Japanese girl's point of view, nationality isn't much of a problem. Japanese girls focus more on personality than looks or skin color- there aren't many "good-looking" men. If a caucasian and a mexican with nearly the same personality were to approach a Japanese girl, maybe she would choose the caucasian, but that would be preference. People don't have the same personality and their likes/dislikes vary. I've seen lots of Mexican&Japanese couples at ICU.

Bodybuilding isn't really that popular in Japan, working out a bit is okay but most girls would just be scared o-o;
I think you should fix your personality first, before changing your appearance. You shouldn't classify people/yourself solely by race. Your racist arrogance might be what's preventing you from getting a girl.