Nothing like a Japanese fighter (4)
I believe the answer is:
zero
This clue is a double definition.
'nothing' is the first definition.
(synonyms)
'a japanese fighter' is the second definition.
(I've seen this before)
'like' is the link.
(Other definitions for zero that I've seen before include "You'll find nothing" , "Ineffective person" , "Nothing; freezing point (in degrees centigrade)" , "Less than one" , "Nothing - certainly not a hero!" .)