The housing is a real pain. Most schools understand the situation. I have such a job now, but I didn't get any help with housing. I have also been here for four years and that is what you will find in Japan. It is great.
Japan is the most comfortable and modern country in Asia.
It feels like the USA at times. Most Japanese are open to foreigners. I have only had one or two bad experinces in the four years that I have lived here. They are usually called International Bars. It's a lot of fun.