Here is the white chocolate flavored kitkat (ホワイトキットカット).
A limited edition, which is only sold in winter in Japan.
It is part of the collection: "オ ト ナ の 甘 さ" which means "adult sweetness" hence the fact that white chocolate has a fairly strong flavor.
The bag contains 12 mini Kit Kat - which can therefore be divided in two like the "traditional" Kit Kat.
Allergens: flour, milk, soy