Exotic Tokyo, Japanese city (5)
I believe the answer is:
kyoto
'japanese city' is the definition.
(I've seen this before)
'exotic tokyo' is the wordplay.
'exotic' indicates anagramming the letters.
'tokyo' is an anagram of 'KYOTO'.
(Other definitions for kyoto that I've seen before include "Japanese capital before 1868" , "Old Japanese capital" , "Japanese city of treaty on climate change" , "nearby city" , "Japan's old capital" .)