Japanese fighter gives you nothing (4)
I believe the answer is:
zero
This clue is a double definition.
'japanese fighter' is the first definition.
(I've seen this before)
'nothing' is the second definition.
(synonyms)
'gives you' acts as a link.
(Other definitions for zero that I've seen before include "Duck" , "Less than one" , "Nowt" , "hour for action" , "has no effect, in addition" .)