Princess Luna went through a hell of a growth spurt between The Mare in the Moon and Luna Eclipsed. How exactly did she achieve what looks to be an entirely new body? And how does the disappearance of The Great and Powerful Trixie link to this miracle? Grimdark fic.

Marvelously magical reading by Illya Leonov.

This story is a sequel to Off The Edge Of The Map

When Twilight is sent with Luna on a diplomatic mission to Draconia, they quickly find themselves somewhere that doesn't appear on any map, and Luna is lost in more than one way...

Thanks to RBDash47 of Pony Fiction Archive for formatting it for submission.
Title image by Valcron

Tremendous thanks to Illya Leonov and Scribbler for the Audiobook version.
Now with a Spanssh translation by SPANIARD KIWI: https://www.deviantart.com/spaniard-kiwi/art/Apoteosis-2-3-857110089

This story is a sequel to Apotheosis

Celestia leaves Equestria in the hooves of Luna and Twilight.

While she searches among the gods to answer her questions, Luna and Twilight must struggle to fulfill their own duties to ponies and to Equestria.
Now with a Spanish translation by SPANIARD KIWI: https://www.deviantart.com/spaniard-kiwi/art/Apoteosis-3-3-857110357

Luna wants to protect her little ponies too. It is her duty to step into their slumber and keep them safe from the horrors of the Dreamtime. But she has been away for a thousand years, and before she can help others face their nightmares, she must come to terms with her own. As she tries to transcend reality and enter into the sea of dreams, Luna remembers how she let hatred into her heart, and the price both she and her Nightguard paid for her fall.

Can she ever earn forgiveness for her crimes? Perhaps Equestria truly is better off with just one Princess to rule over the day and night. She is small, her body weakened by the Elements of Harmony, and this beautiful world her sister watches over has no need for her.

No. No, we will not be forgotten. It is our duty to guard the dreams of our subjects, and guard them we shall!

Shortly after the defeat of Nightmare Moon, Celestia comes to Luna with a question, one that has haunted her for a thousand years. She wants a full and honest answer, no matter how hard the words are to hear.

Of course, sometimes words just aren't enough. Some things in life can only be seen.

Cover art: Forgive me by ElkaArt on DeviantArt. Used with permission.

Conceptualized pre-season 4.

Princess Luna's memories and connection to the Moon have been missing since her return to Canterlot, and every day she gets more and more guilty that she hasn't taken any responsibilities back from her overburdened sister. Surely something in Equestria can make her whole again, but who or what could it be?

[Written in June 2011, back when our mental image of Luna didn't yet include the Royal Canterlot Voice or bat pony guards.]

As she prepares to lift the sun to its apex, to usher in the solstice and bring the Summer Sun Celebration to its climax once more, Princess Celestia embraces the vision of the Equestrian summer that it places before her.

In the vision the summer she is birthing plays out around her, and as a happy phantom she walks through the summer stories of the lives of Twilight, Spike, the other bearers of the Elements of Harmony, their families and loved ones, and even her own sister, Luna. As she does so, she thinks on this world, her role in it...and the gift she's given it.

Having returned to Canterlot for official purposes, Twilight and Spike grow increasingly ready to go back home to Ponyville. Yet, when Twilight recognizes signs of distress in the Sister Sovereigns, the princesses Celestia and Luna, her curiosity gets the better of her.

What she finds shows her more about her teacher than she could have dreamed...yet places her in tremendous danger...

It's Sisterhooves Social time again. This year, Dash catches wind of two new competitors and gets Spike to bet on the race. When her team is revealed to be a rather famous set of siblings, it looks like poor Spike will be her slave for a week! However, due to a team of masseurs, a minor invasion, unfortunate addictions, and dubious barrel components, victory might not be as near as she thinks...

Memories of a time long gone by hold the key to Luna's salvation. To save her sister, Celestia sends Twilight on a quest through Luna's mind, searching for the source of an ancient spell that is slowly killing her. What she finds may change her forever.

Twilight experiences Luna's life first hand on an emotional journey through the dark alicorn's past.