The first KFC Japan opened in Nagoya in 1970 and quickly gained popularity. (There are now over 15,000 KFC outlets in 105 countries and territories around the world.) That same year, at the World Exposition in Osaka, KFC and other American fast food chains like McDonald’s were met with great market testing results and helped jump start the westernized “fast food” movement in Japan. After the big commercial push in ’74, the catchphrase “Christmas=Kentucky” paired with plenty of commercials on TV caught on.
The “Americaness” and simplicity of the message rather than any religious associations with the holiday is what makes it appealing. The Financial Times reports:
These days, KFC records its highest sales volume each year on Christmas eve.Read More:http://www.smithsonianmag.com/arts-culture/why-japan-is-obsessed-with-kentucky-fried-chicken-on-christmas-1-161666960/