[adama]

"...the biggest opportunity for a foreignor to take as far as work goes is teaching."

Because most foreigners that come here have no marketable skillsets and don't speak any Japanese. You're from the U.S. -- how easy would it be to come to the U.S. from abroad, get a job that sponsors your visa, hooks you up with housing and insurance, and gives you a job that you can do in your native language involving no English whatsoever? Good luck finding that job ... yet that's just what English-teaching positions in Japan offer foreigners.

"If I could go to Japan and learn Japanese from imersion entirely, I would definetly love to do it. If you have any information on how I can land a job in Japan without having first gotten some college, I'd greatly appreciate it. I'd rather go to Japan and learn the language and culture then go in a few years after college stateside."

This paragraph boggles my mind. You want to come to Japan without having attended any college, learn Japanese through immersion, return to the U.S. to attend college, then return to Japan, somehow manage to get PR and then work in a Japanese company?! If I may:

Option 1: Attend college in the U.S., get your 4-year degree, minor in Japanese, do a homestay or two. Once you have your degree, get to Japan via the teaching English route and start exploring exit strategies.

Option 2: Amass wads of cash to attend college in Japan doing the dorm thing, and with your student visa work up to 28 hrs/wk and master Japanese until graduation (at which time you strike out on your own, with the requisite boat ride to Korea to change out your visa).

"By the time I can apply for permanent residency, I will be fluent in Japanese."

Good luck with that. Hope you're studying now.

"Hence my question asking what the chances are for someone who has come to Japan as a foreignor but obtained permanent residency, getting a job by applying to a Japanese company from within Japan."

Really not trying to be petty, but it's foreignER. And your chances of getting a job will vary depending on what you can bring to the table, skill-wise. That being said, if my dumb ass can get a job in a Japanese company, so can you. Of course, said ass has also taken the time to learn Japanese and a couple other things that might be of use somewhere out there on the marketplace.

p/s - You do know you can work on a spousal visa, right? And you know that being married to a Japanese spouse will go a LONG way to you getting your PR, right? So why the morbid fixation on PR instead of interim spouse visa? Just curious.