Kōsei is a Japanese term that translates to "reconstruction" or "reorganization." It is often used in various contexts, including social, political, and economic reforms. The concept emphasizes the importance of rebuilding systems or structures to improve efficiency and effectiveness. In the context of Japanese history, Kōsei is associated with the post-World War II era when the country underwent significant changes to its government and economy. This period saw the implementation of new policies aimed at fostering growth and stability, ultimately leading to Japan's rapid economic recovery and development in the following decades.