Bringing Back Hope

The one thing that Harry Potter had never thought about in his life was time travel. Especially his children, along with an assortment of their cousins, travelling back in time and walking into his life without any way of travelling back into the future. Of course, he also never expected them to fight for him, but hey, he wasn't complaining. Includes HP/GW RW/HG SB/HJ RL/NT pairs.