The son has risen in Japan, as Emperor Akihito and Empress Michiko bowed out gracefully in favor of their son and daughter-in-law, now the Emperor Naruhito and Empress Masako. What, you missed this on May Day? You are not alone. The Japanese head of state, like the British monarch, has an important public role, but no real political power.
President Trump thanked the outgoing Emperor and Empress on 29 April, then sent greetings and congratulations to the incoming emperor and empress on 30 April. This abdication was a new thing for Japanese emperors since the Meiji Restoration, when the emperors reassumed real power:More