Twilight is troubled by her new title and is constantly driving herself to sleep deprivation every night since her coronation. Princess Celestia is worried about her, so she sends a personal guard for her. Flash Sentry.
Cute moments, arguments, funny situations and romance are now in the life of the new princess. Until she is called to Canterlot because of a new threat to Equestria.
Oni Fire, a night pony devoted to his princess of the night. Twilight, Flash and White Fur will discover the key to defeat their enemies.

On a dark night filled with even darker magics, an insane cult attempts to give Nightmare Moon a body and life of her own, utterly separate from Princess Luna. But, when the spell is interrupted by Celestia, something unexpected is created.

Now, a little black alicorn filly named Nyx finds herself living under the care of Twilight Sparkle, only to be haunted by memories and emotions from her past. Is she Nightmare Moon reborn or is she simply a doppelganger with a soul and mind of her own? Can Twilight Sparkle protect Nyx from those who refuse to see past her dragon eyes and black coat?

Or, will Nyx be forced to inherit the sins that may not even be hers and become the greatest evil Equestria has ever known?