Obliviate

The biggest secret of Hermione Granger's life is about to come unraveled when she accepts a position as the new Transfiguration Professor at Hogwarts. What she doesn't come prepared for is facing her former best friend who just so happens to be the new DADA teacher. Harry Potter has dealt with his fair share of loss. Losing Hermione Granger as his best friend was up there as one of the hardest, probably because he didn't know why. He did however know that chunks of his memory were missing and if it was one thing that the "brightest witch of their age" was good at, it was Obliviate. Now back in Hogwarts and coming face to face with Hermione, Harry is more determined than ever to discover what he's missing. He never imagined that part of what he was missing came in the form of a 6 year old green eyed little girl.