It was only a very small part, though. The rest of him was occupied with the sound of Voldemort's voice, abruptly gentle. That voice was purring in his mind, Do as I say, child, the pain will stop if you do. It seemed like such a sensible thing to do, really. Simple possession, painless and guiltless and easy, what a pleasant alternative to this pain ... Surely no one would blame him if he succumbed, he was only a kid, after all, it wasn't his job to stand up Voldemort, that was what real Gryffindors were for ...