Christmas is not a national holiday in Japan, so schools and businesses are normally open on December 25th. Parties are often held for children, with games and dancing. Japanese Christmas Cake is a sponge cake decorated with trees, flowers and a figure of Santa Claus.
Fried chicken is often eaten on Christmas day. It is the busiest time of year for restaurants such as KFC and people can place orders at their local fast food restaurant in advance! The traditional Japanese christmas food is christmas cake, but it's not a rich fruit cake, but is usually a sponge cake decorated with strawberries and whipped cream.