Life without a Sister

Celestia watched as Luna shrieked in rage. " THERE CAN ONLY BE ONE PRINCESS IN EQUESTRIA, AND THAT PRINCESS WILL BE ME!" Luna shrieked as her forelegs came down onto the bridge her eyes glowing while it happened. A crack from the bridge went up the wall, a shadow following it as it broke the window showing sunlight. Luna flapped upward slowly. Her horn started to glow brightly as the moon slowly started to cover the sun. Celestia's ears flattened against her skull as she cowered back.

A black aura went around Luna, engulfing her like a tornado. What came out was definitely not Luna. Her background on her Cutie Mark was a deep purple. Her coat was black, her mane was  wispy, she was wearing a titanium silver helmet, and her neck brace came down into a heart shape, but there were curves at the beginning. Her pupils were shaped like a cat's, her teeth were sharp, and she had long titanium silver shoes.

This new Luna laughed wickedly, her wispy mane swirling around. Suddenly her mane and her laughter stopped to be replaced by a look of rage. She used her magic to blow a statue of Celestia's head to bits.

Celestia stopped cowering as the smoke from the rubble cleared away. She walked forward slightly, stopping to look down at the rubble and then back at her sister. Celestia's eyes were hard.

Celestia flapped upward and looked at Luna. Suddenly, Luna shot a magic beam at Celestia, missing as Celestia moved away. The result made a hole in the roof, showing the moon, making it obvious it was nighttime.

Celestia landed on the ground. " Luna, I will not fight you! You must lower the moon, it is your duty!"

Luna raised her hoof and set it down. " Luna. I am not Luna. I am Nightmare Moon! I have but one royal duty now. To destroy YOU!"  Nightmare Moon shot a beam at Celestia, but Celestia flew into the sky.

"And where do you think you're going?" Nightmare Moon smiled as she flew into the sky, following Celestia.