Found the specialty KitKat shop at Tokyo station, it was just opened on July 28th. The chocolate bars were created in collaboration with Japanese chocolatier "Yasumasa Takagi” I got "Orange Flavored KitKat", "Sublime Bitter KitKat" and "Submlime Raspberry KitKat" for my friend and myself.
The sublime bitter and sublime raspberry (black boxes) are limited, and it is made from couverture chocolate. Maybe because of that, the price is pretty expensive. You can only find one piece of KitKat in the box, but I didn't know until I opened it... I think I too expected the sublime one, and it wasn't much special to me.
The orange flavored KitKat is less expensive compared to the sublime KitKat and the taste was good, too. There are four packaging in the box.
