The first shop in the world that is specialized in Kit Kat has recently opened its doors in the Seibu shopping mall (B1 floor) in Ikebukuro. After a while more Kit Kat shops have opened in Ginza.
In addition to the most popular weird varieties that you can usually find in Japan, the shop has exclusive flavours that can only be found in it. This is the logo of the shop, its name is Chocolatory.
Picture by Favy-jp.com
There are zillions of special flavours of Kit Kat available in the shop. More pictures and information about the Kit Kat shop at Favy-jp.com.