If this is indeed a serious post and you are absolutely sincere about wanting to go to Japan for dreams of becoming a musician/talento..in all honesty, you might want to reconsider.
I don't want to sound like Simon Cowell but there is no magical "American Idol-like" formula to becoming a musical star in Japan. If you look at Utada Hikaru, Angela Aki, Ito Yuna and others who were either born outside of Japan or have spent considerable time abroad, they have several things in common - they all speak Japanese, they're all Japanese nationals and they all sing well...very well.
I don't know of any foreigner who's been able to establish a singing career based solely on looks alone. Even those that are able to do so are usually scouted and/or part of a larger label collective (AVEX family, Hello! Project). Others have spent years developing and refining their talents with various talent agencies and groups (
Okinawa Actor's School, Johnny's Jimusho).
To believe that you can go to Japan with no previous music background, no Japanese language background and no agent or affiliation with a record company/talent agency and become a star based solely on your uniqueness as an American/gaikokujin is a bit naive although it sounds like you thought some of this out.
While there are some foreigners who have beat the odds to become minor celebrities in Japan (Chuck Wilson, Dave Spector, Bobby Ologun, Leah Dizon) they had unique personalities and talents that were marketable.
I'd say develop your talents here in the US first (singing/music lessons), learn Japanese and if possible start networking with American sources. Most of the big labels like EMI, Sony, Universal have Japanese divisions which you can transfer to later if possible. You're still very young, what is another couple of years. Unless there's a specific reason of wanting to go to Japan now, this might be better although not necessarily easier. Network with other musicians who could mentor and guide your passion like musicbanter.com
If you can somehow get music samples online via either YouTube or MySpace that can showcase your talents do so and get feedback from others.
If you are indeed talented, it shouldn't matter whether you are in Japan or America, you'll get your recognition either way. Dreams are important but you also have to be realistic too.