The Constitution of Japan is the oldest in the world. More precisely, among modern constitutions it is the 14th oldest, but all of the constitutions enacted before the Constitution of Japan have been frequently amended. For this reason, it is not wrong to say that the Constitution of Japan is the oldest in the world. We, as the sovereign, must take a serious look at the Constitution, which defines the rights of the Japanese people and the basic structure of Japan. We are entering an era where we must exit the mode of “ceasing to think” and start creating a Constitution that reflects the times.