Watch the Sunlight Fade (фемслэш)

To everyone's surprise, the Invasion on the Day of Black Sun is over before it really even begins. The Gaang successfully make their way inside, where all they find is Ozai's dead body and Azula's hairpiece sat next to it. They never find her, though Zuko never stops trying.
However, four years later, she turns up again while the Fire Nation is in the midst of healing. They expect the worst but aren't expecting what they find, that Azula has no memory of who she is, and who they are. While some members are hesitant to live with her again, Zuko and Ty Lee know that they have no choice, the Fire Nation is on the brink of collapse and the only solution is Azula's knowledge. Whether she wants to or not, they need her once more.