> . . . I refuse to use words such as prequel . . .
pre·quel [pree-kwuhl
noun
a literary, dramatic, or filmic work that prefigures a
later work, as by portraying the same characters at a
younger age.
http://dictionary.reference.com/browse/prequel
These terms fail to capture the essential meaning element that the work in question was created after the work on which it is based.
For this reason, I also consider the dictionary definition quoted here to be in error, because it also fails to make this distinction; indeed, its wording implies that the "prequel's" production somehow precedes the work on which it is based.
It is the contrast of these concepts--the production of the derivative work following the original, but its narrative preceding that of the original--that is captured uniquely by the neologism. If we need a word for that, and I think we do, that word is "prequel."
Now, as to Godfather II, I am flummoxed.
≤}B^)