Years have passed since Princess Luna returned home, but the younger sister always believed her mistakes were not entirely in the past. There was one more wound in need of mending: her most loyal subjects, bat-winged ponies, who pledged themselves to Nightmare Moon's cause and were paying the price to this day. Celestia condemned the idea of inviting Nightmare Moon's followers to the homes of her subjects; but Luna had to try, she couldn't watch those who pledged their lives to her being forced to hide, being hated by everyone. Luna gathered a team and began to sway the public opinion, as always, there was an opposition; and then, an old friend offered her support. How could she say no, especially to someone she knew so well?
Editing in progress by Love And What Came After.