There were two examples of Shosei in Japan, Prince Naka no Oe and Emperor Jito in Asuka period, both are recorded in the "Chronicles of Japan" as if they were practically real Emperors.
日本では飛鳥時代に中大兄皇子と持統天皇の二例が見られるが、どちらも日本書紀では一見してほとんど事実上の天皇と同然に記述されている。