Akihito is a member of the Imperial House of Japan who reigned as the 125th Emperor of Japan from 7 January 1989 until his abdication on 30 April 2019. The era of his rule was named the Heisei era, Heisei being an expression of achieving peace worldwide.
Akihito was born as the fifth child and first son of Emperor Shōwa and Empress Kōjun. From Wikipedia