She had no regrets. Being with Twilight...even though it hurt her so much when she died. The experiences, the times they shared...it more than made up for it. And she would not have wanted it any other way. She was contented.
As she walked away, however, a chilling, disembodied voice whispered behind her.
"Don't leave me..."
Celestia turned her head back, and saw a dark, shadowy...entity, slowly forming to become larger and larger.
"Wh...what are you?" Celestia was a little frightened.
The entity had become a lot larger now, and its voice a little clearer.
"Stay...you promised."
"What? I..I..." Celestia's mind was exploding. This voice...why did it sound so familiar? She could swear she had heard it before, but it had been locked away, a distant memory. A faint echo.
The entity finally stopped growing, and it formed the outline of an...alicorn?
"You promised...you would...love...me."
The black hue surrounding the alicorn slowly faded away, leaving behind a lavender alicorn, who looked exactly like Twilight...only more powerful and mysterious.
"Twi...Twilight? But..how?" Celestia struggled to speak.
"You remember...the power..." The voice was ghostly and eerie.
"...of true love...I...still don't get it..." Celestia said.
"Not even death...may seperate us..."
Twilight walked forward and touched Celestia's cheek. Celestia recoiled, because somehow...the hoof was ice-cold.
"Twilight...are...you even...alive?" Celestia wanted to cry. Twilight was back...or was she?
"Alive...?" The ghostly apparition of Twilight mused.
"Live or death...it doesn't matter...as long as we are together." Twilight unfurled her wings, which was shockingly much wider than Celestia's.
"Twilight...I love you." Celestia walked closer, so that their heads touched each other.
Up close, Celestia saw Twilight's true form. Her face...it was gone, replaced by a skull, and in it contained two, purple orbs that were glowing so fiercely it hurt Celestia's eyes just to look at them. Even her body wasn't real... it was all skeleton all the way to her tail. But Celestia did not feel scared, or worried.
For all that mattered was that Twilight was with her, and now...forever.
"I love you too, Celestia..."
And they leant their heads in and kissed.