Princess Luna has a personal sanctuary- a cavern hidden from plain sight, an isolated pool of deep, cool, clear water where nothing else lives, a place free of human sight.
In between her duties of dream-keeping, Luna likes to visit this place. On a single breath, her swim beneath the surface is a relaxing, liberating experience for the Night Princess.
CONTAINS: Very minor fanservice (Humanised Princess Luna in a one-piece swimsuit).
(Tagged MLP:FiM and not MLP:EqG because it features humanised Princess Luna, not Vice Principal Luna).
My first attempt at any kind of story. I really like these kinds of stories so expect to see more in the future.