I've there's pretty much a lot of women from outside Japan/Asia who do that -- they go there to work as "hostesses" (not sure if it's the right English word). I bumped on a Polish girl on one board and she talked about her job. It's pretty weird and usually not legal. But I'd love to go to Japan to do something like modeling or maybe extra on the set, becouse it's surely easier to get a job as an extra rather then a model, especially if you're a male
One thing that stops me is the legal stuff, allowances, visas.. it's hard to get them.