Code Geass, Blades of the Rebellion

What if Lelouch had met a white haired soldier when traversing the battlefields of Japan during the invasion? What if this soldier led Lelouch and Nunally to a new life, a new future where they could fight for their dreams? What if something that wasn't possible, became possible? (Shitty Summary. Lelouch/?, Smarter Lelouch, Xenoblade Chronicles X as a third crossover)