Why Japanese worshipping SUN as their god?
We do not worship the sun as our god. Our country is the land of the rising sun because it was named that by a bunch of important Chinese guys back way back in history. (I really don’t want to go into details. Research it if you’re willing to take the time.) However, Shintoism does have a sun god called Amaterasu. Religion is such a small thing in Japan that not very many people worship anything.