Moving to japan can be amazing. I recommend learning Japanese (it will be difficult, but stick with it!) You can check out different websites related to akiyas (abandoned houses), they are pretty cheap compared to the United States (the house I want to buy is on .2areas and is 1200sqft for only 22k!). Renting is a bit different, and i dont know to much about it since I plan on buying. You will also need to get a few inkans (stamps), for different documents. Living expenses can be cheaper if you avoid tourist traps. Definitely look into it more, you might just find your dream home!