Luna has a depressing nightmare.

Set before the events of the show.

Everyone has nightmares. Some are about our worst fears coming true. Others are bad things happening to the ones we love.

Princess Luna has been freed from her nightmare come true of being Nightmare Moon. Yet even with things seemingly returning to normal, all is not right.

And some nightmares can return in unsuspecting ways...

Luna has been working to hard lately. Princess Celestia believes she needs a break. What better way to do that then read her a bedtime story. Not just any bedtime story but, one of her very own written fan-fictions!

Twilight's twenty-first birthday is coming up and the girls celebrate in Canterlot's vibrant bars and clubs, Luna is invited too, although she is not entirely familiar with such activities. Alcohol fuelled adventures abound!

This story is a sequel to Oldnew Luna

Twilight and Luna have now been living together for two years. Luna regains her powers over the night sky and the pair must move to Canterlot for Luna to once more take up her duties.

After Nightmare Night, Luna invites Twilight to tea, and they start spending more time together. Princess Celestia teases Luna about it sometimes.

AU. Based on the first season. Twilight and Celestia begin to drift apart due to a misunderstanding. Will Luna speak up and repair the breach, or will she remain silent to keep her new friend, Twilight, all to herself? What other challenges will face everypony involved because of this new relationship?

It's a simple little love story. Unfortunately, love's not simple.

Twilight Sparkle is called away to tend to Luna when she falls ill. As Luna grows sicker and Twilight more determined to help the younger princess, she begins to uncover dark secrets about the elements, the alicorns, and her own past.

An instantly regretted bet with Luna leads to Celestia doing one of the most ill-advised things it's possible for anypony to ever do, ever.

Princess Luna has fallen ill, and with suspicions of foul play floating around Canterlot, it's up to the newly-crowned Princess Twilight Sparkle to find the cause! With the stability of Equestria in the balance, will she find what's making the princess so ill? And if the allegations of foul play are true, who could do such a thing?

(A collaboration between myself and Denim_Blue, who is a wonderful author and you should totally check him out.)