Three Hallows, a Rat, and Redemption

Peter wasn't ready to die, but what he chose was worse. Now the Dark Lord is dead, leaving Peter with only a toddler and the need face the person he's become. This is the story of a man who survived, like a cockroach. A man who did the wrong things for the right reasons, betrayed everything he was and is now trying to make things right. A Peter-reincarnated-as-Harry redemption fic.