Cracking the Secret: The Irresistible Popularity of Kit Kats in Japan – OMG Japan
What's Up With KitKat In Japan? – National Geographic, 54% OFF
In Japan, the Kit Kat Isn't Just a Chocolate. It's an Obsession. - The New York Times
Why does Kit Kat chocolate have so many more flavors in Japan than
Kitkat – Wikipedia
Kit Kat - Wikipedia
What does Japanese Kit Kat taste like? - Quora
What's Up With KitKat In Japan? – National Geographic, 54% OFF
We try “Zunda” Kit Kat – it's confusingly delicious!