your all wrong the correct answer is FFT.
(this answer will include spoilers)
When you get worker 8 with mistodios help Cloud from final fantasyVII comes out and then he goes to a town with a flower girl named aries. after you go through many cut scenes and convince cloud to join you he still thinks he is a member of soldier which doest exist in any game(and its not mentioned either) other than FF7 which makes FFT the oly game which is a sequal for Cloud Strife.