Emperor Keikō is a legendary figure in Japanese history, traditionally considered the 12th emperor of Japan. He is believed to have reigned during the early part of the 1st century AD, although historical records about his life and reign are scarce and often mixed with mythology. His name is associated with the Yamato dynasty, which is the oldest continuing hereditary monarchy in the world. According to ancient texts, such as the Nihon Shoki and Chronicles of Japan, Emperor Keikō is credited with various accomplishments, including military campaigns and the establishment of governance. His reign is often viewed as a time of consolidation for the early Japanese state, although much of his story is shrouded in legend rather than verified history.