In the past, during the war, people were required to turn off the lights at home. Because of this, it's been said that brightness and bright lights became the symbol of peace among ordinary Japanese people, and they became fond of bright rooms. This tendency still remains in Japanese society. Brightness makes many people feel secure and cheers them up. On top of that, since many people are used to bright lights in stores, dim lights in shops in Japan make them feel like these shops are old and unfashionable, although some people like dim lights in shops and restaurants in Western countries.