In a crossover between Overwatch and Kingdom Hearts, Soldier: 76 is the Nobody of Jack Morrison.

The Planet Earth has been invaded by the Heartless and it's up to Sora and his friends to save the world from being put into darkness forever.

Seven years have passed since the unfortunate downfall of Overwatch, the Realm of Light's only formidable peacekeeping force that ever existed. The Heroes of the Past had already saved the world once during the Shadow Crisis, but now a new mysterious foe rises from the same cesspool of Darkness. It is time for a fresh new Light to emerge as well. A New Light of Heroes. AU.

When he rejoined with Sora, Roxas thought that would be the end of his story, but now he finds himself in another world, a world filled with heroes. The Heartless have made their presence known here, and he's the only one with the tools to stop them from consuming this world with darkness. He may need some help, so will be join the heroes, and learn what it means to be one?