Well that is a bit of an obsolete question as why would you not want to live and work in Japan! This gorgeous country steals visitors hearts more than many other places around the world.
And I have done some research on this so feel like I know what I am talking about.
The best thing about your desire to live in Japan? You can actually, realistically, get yourself employed in Japan and make that dream a reality.
And no, it is not as difficult as you might think or other people might claim it is.
I wrote an article for JimmyESL.com about finding work in Japan as an English teacher. Teaching English in Japan is the most realistic option for us who do not speak the local language. Fortunately there are always positions for novice teachers here in the land of the rising sun. You can find the article here or http://jimmyesl.com/teach-english-japan/want-work-japan-teaching-english-2017/