Yes, Christmas is celebrated in Japan, but it's quite different from the way it is celebrated in the West. In Japan, Christmas Eve is more important than Christmas Day itself. People usually spend time with their families, exchange gifts, and have a nice dinner together. It's also common to see Christmas trees decorated with ornaments and lights. However, the traditional Japanese New Year, or "Omisoka," is celebrated on January 1st and involves a more elaborate set of customs and traditions.