The Constitution of Japan
日本国憲法
Every amendment to this law that e-Gov records and, for those whose changes this site has read, what each one changes, provision by provision: the wording before and after, in Japanese and in English, with the words that change marked.
Promulgated, not yet in force
No amendment to this law is waiting to come into force.
e-Gov's record of amendments also lists the day this law as first made came into force, 3 May 1947. That is not an amendment.