Unlike in many Western countries, Christmas in Japan is not tied to religious traditions.
Most Japanese people do not identify as Christian, so the holiday has few religious connotations. Instead, it’s celebrated as a commercial and cultural event focused on spreading happiness and festive fun.
Major shopping centers and department stores go all out with Christmas decorations and stunning winter illuminations. Christmas trees, Santa Claus figures, and elaborate displays fill malls and public spaces.
Christmas shopping is a big deal, and couples often exchange gifts as part of a romantic holiday tradition.
AloJapan.com