Harry Potter was killed by him as a baby.
So Dumbledore was without his golden boy.
So Voldemort no longer has a mortal enemy.
So Snape had no one to spray his venom on.
So Draco had no one to bully.
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Forgive my copywriting incompetence - -
In short, this is a HP world without Harry Potter, and the protagonist will not replace Harry Potter as the savior.
As for CP, I haven't considered it yet.
Updates are irregular.
Well, that's probably it...