It seems like an easy choice, doesn't it? However, when you've spent a thousand years away from other ponies, the darkness can be comforting. It will take a lot of work to drag Luna out of the darkness, but one pink pony is up to the task.
This story references some events in the Friends Forever #12 comic, but is not required reading by any means to enjoy this story.
Pre-reading, editing, and advice from Azu,Cookie Monstar,Key Tapper, and Natostrike.
Glorious cover art by Bladeofblack