LunaIsCool

AU from HBP. The war is a much bigger disaster, so is Harry's relationship with Ginny. When Voldemort is defeated, Harry returns home to find Ginny engaged to his worst enemy. Meanwhile, a new Dark Wizard plots in secret...

Lily Potter doesn't like her middle name, until it crops up when she least expects it.

Arthur and Lucius, Ron and Draco... the enmity betweent the Weasleys and the Malfoys has not ended with the defeat of Voldemort. But as Michael Weasley and Elizabeth Malfoy are start their sixth year, they begin to learn more than they ever knew about the past and about themselves, with the aid of their new DADA teacher... a hero unseen in wizarding Britain since the war ended...

HBP AU. Harry wants Ginny. But there's something he doesn't know... and the secret isn't kind to him. Seventh year, Horcrux hunting, battle, and romance. Character death in later chapters. Diverges after Ginny's breakup with Dean, but before the final Quidditch match.

On Christmas morning in their seventh year, a flying accident causes the Trio to vanish. They reappear in a galaxy far, far away... where a war against the Galactic Empire rages.