AKIPRESS.COM - Japan's Emperor Naruhito has given his first address after ascending the throne, expressing his hope for happiness and world peace, BBC reports.

His ascension was formalised earlier on Wednesday in a ceremony that saw him inherit the Imperial Treasures.

A new imperial era called Reiwa - which means order and harmony - has begun and will last throughout his reign.

His 85-year-old father Akihito became the first emperor to abdicate in more than 200 years on Tuesday.

In a short speech at the Imperial Palace, Emperor Naruhito said he hoped "for the happiness of the people... progress of the country, and world peace".

Naruhito, 59, also expressed gratitude towards his father Emperor Emeritus Akihito, his voice breaking when he talked about Akihito's service to his country.