Turns out OK as a second city in Japan (5)
I believe the answer is:
osaka
'city in japan' is the definition.
(I've seen this in another clue)
'turns out ok as a second' is the wordplay.
'ok as a' anagrams to 'OSAKA'.
Though, I am not sure how this is indicated.
Can you help me to learn more?
(Other definitions for osaka that I've seen before include "Japan's third-largest city" , "Place" , "Third most populous Japanese city" , "Japanese port, Bay" , "S. Japan port, bay" .)