Ostentation came at first in story read the other way (5)
I believe the answer is:
eclat
'ostentation' is the definition.
(I've seen this before)
'came at first in story read the other way' is the wordplay.
'at first' says to take the initial letters.
'in' means one lot of letters goes inside another.
'story read' becomes 'tale' (I am not sure about this - if you are sure you should believe this answer much more).
'the other way' is a reversal indicator.
The initial letter of 'came' is 'c'.
'c' inserted within 'tale' is 'talce'.
'talce' in reverse letter order is 'ECLAT'.
Can you help me to learn more?
(Other definitions for eclat that I've seen before include "Ostentation" , "French social distinction or success" , "Splash" , "Enthusiastic approval" , "French renown" .)