Ishin
Ishin (維新) is a Japanese term that translates roughly to restoration, renewal, or modernization. It is used to describe sweeping political, social, and economic reforms designed to overhaul institutions, laws, and society. In historical contexts, the word is most closely associated with the Meiji Ishin, the Meiji Restoration of 1868–1869, which ended the Tokugawa shogunate and restored imperial rule under Emperor Meiji.
During the Meiji Ishin, the feudal han domain system was abolished and replaced with a prefectural administration.
Outside this historical episode, ishin is used more broadly in Japanese to describe reform or modernization