V is much better than IV. Why because the story is more interesting and so is the gameplay. Also it has a good feature of adding monsters to your party.
If you won't take my word check this out gamefaqs.com/portable/ds/review/942423.html.
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I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.