In Japan, the Kit Kat Isn't Just a Chocolate. It's an Obsession. - The New York Times
How Did KIT KAT Become a Japanese Brand?, by IGNITION Staff, IGNITION INT.
Why are Kit Kats so popular in Japan
The graphic design of my grandmas 70s microwaving book is very dramatic. : r /mildlyinteresting
Japan's KitKat craze: It's gone gourmet
What's Up with KitKat in Japan? – National Geographic Education Blog
Top 3 Summer Exclusive Japanese KitKats! - TokyoTreat Blog
KitKats in Japan have started changing their packaging from plastic to paper : r/ZeroWaste
Sometimes Foodie: The Good, The Bad, and The Regretful - Japanese Kit-Kats