"the traditional custom of giving KitKat bars as tokens of good luck in Japan. The tradition, based on the name KitKat sounding similar to the Japanese phrase ‘Kitto Katsu’, which means ‘surely win’, sees Japanese well-wishers present the chocolate to their friends and loved ones every year, especially for school entrance exams."
Source: NESTLÉ CELEBRATES A CENTURY IN JAPAN
4th April 2013
Confectionery Production .com