Harry never enjoyed being in the spotlights and would rather observe from the sidelines. Magical world won't have it and both light and dark will do their best to focus the fate of everything on him. Will they be able to force him to care and fight for their petty opinions? Doubtful.

Tom Riddle wasn't just gifted with magic, he was gifted with intellect as well. So when he sees an opportunity to hurt his greatest enemy harder then anyone ever before he takes it. Scheme so vile nobody dares to even think about it, at least until it's too late. Death Eater!Harry