Yeah that’s a rare WonderFest figure, was featured in the pics at AIC before they went all modern.
There’s that one, and a smaller figure of Dee, both come as unpainted resin kits.
There was a group of people that made their own MitsukiR and some other statues, but never released anything.
I forget off the top of my head what year it’s from, I want to say 2003, but could be wrong.
But yeah, rare kit, ever more rare the longer time goes by. Camping Yahoo auctions Japan is the only other place you’ll ever find one.