Prequel to Lost. (Some chapters are set in the present and others in the past)

It’s been two years since Fluttershy became Lost in the Everfree forest and was rescued by the human mage Grendel, curious to know more about humans beyond what Fluttershy told her. Twilight Sparkle decides to visit the Royal Archives in Canterlot but each trips goes without success. On one of her visits however, she is shown by the Royal Archives Scribe, Quill Pen, a secret room that contains an old tome. As she reads it she discovers that not only have there been humans in Equestria before, but what she and every pony knew about the rise and fall of King Sombra…

...Was wrong

(Cover art done by me.)
(Thank you to Cirrus_Brony for his editing.)

-Two pairs of siblings were shattered too soon.
-One split by stone, the other by moon.
-In grief of loss the brother ran.
-Now he's come back to help all he can.

-Brother of Discord, back from the waste.
-Two thousand years, add chaos for taste.
-Meets with the elements only to find,
-His brother demented, both body and mind.

-Chaos, Confusion, and Entropy's friend.
-Discord's antics, what he's come to mend.
-Hilarity, Joy, and Jokes to spare,
-The little known brother of chaos' heir.

Picture is 'Chaos Mage' © *Sergon (I edited the hue a bit.)

Twilight Sparkle is changing; she's not sure how, or why. All she does
know is that she has to reverse the change before she hurts somepony she
cares about. But she won't be alone, Spike will be by her side until the
end.

Celestia asks Luna to teach Twilight dark magic. Twilight must pass Luna's class in order to graduate. As Luna develops feelings for her student, Twilight questions which princess she really wants to serve and protect.
(Twilight X Luna)

Behind her calm and happy mask Celestia is a lonely alicorn. Once betrayed by a past love she has resigned herself to be alone forever.

But when a new love in the form of an old student is presented can Celestia let go of her sad past and take hold of a happier future?

And will the events happening around her be enough to make her realize that happiness has always been within her grasp.

Twilestia Shipping

Twilight travels to Canterlot to comfort Princess Luna. Thus she spends much time with the royal alicorn -- but not only in the living realm of Equestria. Strange dreams of the regal mare start to overtake her sleep, and soon Twilight realizes that the Princess is triggering feelings she has never felt before.

Can Twilight admit her emotions to Luna? If so, how? And then why is Luna turning into Nightmare Moon again?

Read and find out.
___

A/N: Fic is going to be a TwiLuna shipping (no clopfic).

Plus, the story may get dark/adventurous or sad, I'll add the categories when there is actually a part of that category in the actual story.

Kidnapped and taken to forbidding Midnight Castle, Twilight finds herself engaged in a battle of wits against an increasingly dangerous and dominating Trixie.

Illustration by c0nker.

*Revised Edition*
Princess Celestia takes the week off for spring break and her annual visit with Twilight Sparkle. But it seems Twilight has more in mind than just visiting. After a bottle of wine or two leads to a bit more than student-teacher hugging, it's clear her student is in Canterlot for more than tea and study. Now Celestia is caught between a romantically-aggressive Twilight that has awaken strange new sensations in the normally stoic sun goddess and a resentful, overprotective sister that has laid an ultimatum: Put an end to her "interactions" with Twilight before she does.

Twilight prepares for the most important night of her life. But it doens't go exactly as she had wanted...

Story was inspired by SolFoe's Study Interruption

Twilight Sparkle is called to Canterlot Castle where something has happened to Princess Luna that has reverted her to a weakened state, she has to live with Twilight whilst she recuperates her magic.