these came out a couple years back. actualy if you go to the english language side of the furifuri site and click on Store you can see which figs are still available for purchase with some instructions on how to order. Looks like they take paypal.
Ha, when I started back in to toys for a bit I started with these when they were new. Actually, I think I bought them on Dr. Tongues site?
These have been long sold out for a few years. I just happened to come across the original colorway of the boyz at playlounge while I was visiting in London. Good luck!