Capital city of Japan (5)
I believe the answer is:
tokyo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">capital city of japan</span>' is the definition.<br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tokyo that I've seen before include "Capital of Japan" , "Edo's modern name" , "eastern city" , "Kyoto (anag)" , "Far Eastern capital" .)