Lily Luna Potter and the Younger World

Time travel never had many rules. Then again, never did fanfiction. Lily Potter, the last living child of Harry, is in for the ride of a (second lifetime) when she meets the ghost of Remus Lupin in the Forbidden Forest after dying in 2016. Her mission- to masquerade as her father's "sister" in what would be his third year at Hogwarts, and kill Voldemort while she's at it. Non CCC.