"Of course, Tia," Luna said from within, causing her sister to smile. She could hear the weariness in Luna's voice, which she had been hiding from her guard, and her use of her pet name meant she was glad to see her. It was a small thing, to be sure, but one she treasured infinitely. Celestia willed the doors open wider with her magic, allowing her entrance. Luna's study was magnificent. The circular room was lined from floor to ceiling with shelves of tomes meticulously organized to Luna's preference.