The Groundhog Who Lived

There were no betrayals. He had no regrets. The world hadn't gotten any worse than it had been. His life had been peaceful when he closed his eyes to pay his price. So why in the name of sanity is he back in his cupboard under the stairs? VERY Dark/Evil Insane OP MoD Harry; Time Travel (Crack-fic? Maybe...do I care? Nope!)