The Constitutional Revision Research Project seeks to follow, analyze, and document constitutional discussion in Japan.
Mainichi ShimbunThe Constitution of Japan (also known as the Postwar Constitution) went into effect in 1947, replacing the Meiji Constitution of 1890. It is recognized as the oldest unamended constitution in the world as of 2022, having never undergone revision in over 70 years since its promulgation. Throughout this time, constitutional revision has become an important subject of vigorous debate and discussion in Japan and around the world.*
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Interview with Former Prime Minister Fumio Kishida: ‘Diversifying Values, Realistic Constitutional Reform’
The Nikkei Shimbun has been publishing a series titled “MESSAGE: 80 Years After the War,” which reflects on the postwar period through testimonies and interviews covering multiple perspectives, including politics, the economy, and people’s daily lives.
In August 2025, the paper compiled a collection of interviews under the title “80 Years After the War Revisited Through Testimonies: The Bubble Economy, the U.S.–Japan Security Treaty, the Constitution, Manufacturing, and More.” This included an interview with former Prime Minister Fumio Kishida: “Values Have Diversified, the Constitution Needs Realistic Revision” (video included).
[Source: The Nikkei Shimbun]
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