Emperor Kōan

Emperor Kōan (孝安天皇 Kōan Tennō) was the sixth emperor of Japan to appear on the traditional list of emperors. No firm date can be assigned to this emperor and he is regarded by historians as a "legendary emperor". He was the fifth of eight emperors without legend. In Kojiki and Nihonshoki only his name and genealogy were recorded. The Japanese traditionally accepted his historical existence, and a tomb was attributed to him, but contemporary studies support the view that no such person existed.