Western Union
If your wallet was stolen, what are you going to do? Ask your parents for sending money through Western Union? I know that is the best way to get money, suppoused to be fast and easy.
But there is a few western union agent in Japan, which is called Suruga Bank. They don't have branch in Fukuoka. Closest branch is Nagoya branch. If you have JR pass, it is not so big problem, but if it is not, you got a trouble.
There is 1 good option, if someone who is your friend or parents in your country has PayPal account, they could send it to someone who live in Japan. And then cash it out.
I think this is the easieset, fastest, and cheapest.