Here in America, our variety of Kit Kat flavors are very, very limited (to chocolate). But overseas... they don't play around.
According to Tokyo Bargain Mania, The Kit Kat "Chocolatory" in Ginza, Tokyo, Japan is releasing a set of limited edition sushi Kit Kats on February 2nd. The set includes a rendering of tuna, uni, and tamago sushi. Now they don't actually taste like seafood, but instead are made to look like sushi. The tuna is a raspberry white chocolate mix, over a rice crispy puff, the sea urchin a Hokkaido melon mascarpone cheese, and the egg is a pumpkin pudding flavor.
Unfortunately, these won't be hitting stateside anytime soon (unless you got the plug). In addition, these are limited to 500 sets for anyone who spends over 3,000 Japanese Yen at the "Chocolatory," making it a dope confection collector's item.