Hidden in plain sight

Voldemort is back! And Dumbledore has an idea to keep Harry save and give him a chance to redo his fourth year: A new identity that allows him to come to Hogwarts as a transfer student and be resorted. Griefing, Harry agrees. It's for the best, after all and it will not only keep him safe but his friends as well. But it means he has to brave what should be his fifth year on his own