It's done. I'm leaving Japan 3/25 and will be home indefinitely. I just quit Interac, telling them I've once again decided that I will not be renewing my contract. I wasn't thinking straight when I originally decided to stay for another year and it took a terrible week of Japan crapping on me for me to realize that I need out.
I spent 4 of the past 7 days driving 2 hours one-way to Mito (capital of Ibaraki) to get my Japanese driver's license and my visa extended. I still have to go back once more to pay for and receive my new visa. If I was staying, I would have to go at least one more time to the DMV to get my license - but that wouldn't even be a sure thing since the driving test is ridiculous and most people have to take it 2 or 3 times before they are passed.
It's going to be hard to say goodbye - in a Stockholm Syndrome kind of way.