In many countries, Christmas decorations remain until January. But in Japan, something striking happens: the moment Christmas ends on December 25th, the entire atmosphere shifts overnight. On December 26th, Santa displays disappear, and stores fill with shimekazari, kadomatsu, kagami mochi, and ingredients for traditional New Year dishes. It feels as if the country has changed seasons in a single night. Why the Switch Happens So Fast This dramatic shift comes from the cultural difference in how Christmas and the New Year are viewed in Japan: Christmas is a light, seasonal event — illumination, gifts for children, and romantic dinners. ...