Yeah, but who do you think would be more likely to look past my handicap and help, an American girl, or a Japanese one?
I've talked to you before about Japan, and I see now you've moved the discussion here because your lies about your "girlfriend" on GAF got everyone against you. BUT anyway.
I wouldn't go to Japan to visit for a month. Not only is that going to be quite costly, but I think you'll end up extremely depressed and lonely if you are not travelling with anyone. Nothing should be stoppong you from going, but I wouldn't recommend going it alone in your case.
I hate to say this, but I think you have zero chance of hooking up with a girl here. For one thing, you won't even be able to communicate with them, and most of them are going to outright ignore you. If you're looking for a relationship, there's no way in hell you can get one by travelling someplace for a short time.
And if you're talking about living here, FORGET IT DUDE. You can't just up and move here. You need to get a job and the proper visa first. And as I recall, you haven't gone to or finished college. It's not going to happen.