Even if a Japanese KitKat flavor sounds good, you never really know how it's going to turn out until you try it. I suppose this is true for just about everything, but personally, I'm not particularly good at knowing which flavors I will enjoy.
For example, I love a good caramel macchiato, but the KitKat was pretty gross. Ume soda sounded like a stinker, but it actually wasn't bad. And I never expected to like Raspberry & Passion Fruit as much as I did.
The bar was a gorgeous shade of matte brown and smelled like bittersweet cocoa with hints of fruitiness. While chewing my first bite, I was pleased with the stick texture and rich flavor of the chocolate. Raspberry and dark chocolate is a fantastic pairing, as the fruit really enhances the tanginess of the chocolate.
The fruit flavors in this KitKat were surprisingly authentic and delightful. The raspberry tasted just like jam, and though I couldn't specifically pick out passion fruit, there were some lovely tropical notes that helped to mellow the tartness of the raspberry. The combination of bittersweet chocolate and tart fruit was just perfect here. It was absolutely delicious and one of the best, most memorable KitKats I've had in a long time.
There are many other reviews of this KitKat, so have a look at Chocablog, Pocky Watch, and Jen's KitKat Blog for a start.