HP Fanfiction: The Savior's Past and Present Lives

At the very last moment, when their beloved savior, just as Dumbledore had planned, undoubtedly cast Avada Kedavra on the Dark Lord and banished him from the world forever, he should have been met with applause, glory, and honor. Instead, all he got was a flash of green light from the wand in the hands of his old friend! "Dear Harry, I'm sorry. When Dumbledore told me you were the last Horcrux, I knew what I had to do. I had to kill you. I struggled with it for a long time. I was a coward, but in that moment, I didn't hesitate. Because as long as you were alive, you'd only live in fear and anxiety, so at least let me do it with my own hands..." When the savior awoke in the cold, the first thing he saw was a pair of murky red eyes, watching him being whipped. When he realized how tiny his body was and who the person beside him was, he wanted to scream, but his vocal cords hadn't fully developed yet. Still, out in the freezing snow, would the former savior and the Dark Lord simply resign themselves to fate and freeze to death somewhere? This is the story of Harry and Voldemort, reborn and together from infancy, hand in hand (?) on their way to Hogwarts, where they meet Hermione, Malfoy, and... Dumbledore, who scripted their lives, and Ron, who killed Harry. Of course, a few little things have changed. For example, the savior and the Dark Lord falling in love...