An AU fic in which the Halo and ME universes share the same galaxy. After a well deserved rest in Cryo-Sleep, Master Chief finally awakens...to a whole new galaxy.

Ten billion people over here die, so twenty billion over there can live. After the war, there are pieces to pick up, and lives to rebuild. And even with the Reapers gone, nothing is easy.

Petunia married a biochemist, and Harry grew up reading science and science fiction. Then came the Hogwarts letter, and a world of intriguing new possibilities to exploit. And new friends, like Hermione Granger, and Professor McGonagall, and Professor Quirrell... COMPLETE.

In a world where there is no war, Zuko and Katara spend their summers together. Growing up is messy, embarrassing, and at times sad, but they think it might be okay because they have each other. Edited summary.