Italian introduces this French story (7)
I believe the answer is:
romance
'story' is the definition.
(romance is a kind of story)
'italian introduces this french' is the wordplay.
'italian' becomes 'roman' (Roman is an example).
'introduces' is a charade indicator (letters next to each other).
'this french' becomes 'ce' (I've seen this in other clues).
'roman'+'ce'='ROMANCE'
(Other definitions for romance that I've seen before include "Sentimental affair in Menorca" , "Affair of the heart" , "Cameron (anag) - love story" , "Court" , "mysterious quality" .)