Emperor Sushun
Sushun (c. 553–592), the 32nd emperor of Japan, was a son of Emperor Kinmei who ascended in 587 as Prince Hatsusebe. His reign was dominated by the minister Soga no Umako.
Resenting this, Sushun planned to do away with Umako, but the minister struck first: in 592 he sent an agent who murdered the emperor. He is the only Japanese sovereign whose assassination by a subject the official chronicles record outright. The throne then passed to his half-sister, Empress Suiko.