What does Japan believe in?

Shinto is the most popular religion. Buddhism comes second. The Japanese do not have a unified faith, and it can be said that there are people who believe in any religion in Japan. There is a saying that "Japanese are Shintoists at bar mitzvah (because bar mitzvahs are mostly held at shrines), Christians at marriage (because they favor getting married in churches), and Buddhists at death (funerals are mostly Buddhist ceremonies)."