<a class="mw-redirect" href="https://en.wikipedia.org/wiki/Crown_Prince" id="mwASM" rel="mw:WikiLink" title="Crown Prince">Crown Prince</a> <a href="https://en.wikipedia.org/wiki/Akihito" id="mwASQ" rel="mw:WikiLink" title="Akihito">Akihito</a> is formally installed as Emperor Akihito of Japan, becoming the 125th Japanese monarch.