*In the human world*

Back in the house. Astin prepared his black tuxedo for the dinner with his friends. He fixed his tie looking at the mares. Their time had run out and they had turned back into their pony form. Astin didn't mind though, he preferred them this way because they looked even more beautiful like goddesses.

He laid a small kiss on both of their horns before walking out of the room flipping the light switch. Celestia and Luna slept as Astin's truck left the driveway.

Luna tossed and turned. Vivid pictures of Twilight, Cadance, and Shining Armor dead flash before her eyes taking up her vision. Screams of grief and distress could be heard in her head like a broken record. She then saw Cadance as a lifeless black statue. Her cold unfeeling eyes and frozen stature. She screamed loudly bending over feeling a wave of nausea hit her. Why has this happened. It is all our fault. The blue mare then saw something. Something she wanted to forget. Something that ruined her life. Its evil smile sent chills throughout her body. She wanted out. Out of this nightmare. Out of her suffering. She screamed in pain. Her mind felt like it was splitting apart. Her thoughts were not only her own anymore. "Accept me!" It hissed.

The blue alicorn shot up screaming and kicking as her sister held her close trying to calm her. "Tia it was horrible" She sobbed as her sister rubbed her back with her hoof. Slowly, a black shadow crept over to the bed from the nearby window. Luna shot it first letting out a blue beam of magic from her horn. Celestia blasted the shadow behind Luna "Pust it back my sister" She groaned out. "What is this?!" Celestia screamed in uncharacteristic frustration

Luna's magic was weak and faded out first. "THE LIGHT!!! TIA THE LIGHT!!!" She yells out. Celestia flips on the light switch with her yellow tinted magic. The shadow screeches and melts into black puddles on the ground. Luna fell into a bow gasping. Her chest burned and her eyes seemed to narrow into turquoise slits temporarily.

Celestia used her muzzle pushing her sister up supporting her. Luna screams as a familiar darkness takes over her body. "no! No! NOOOOOOO!!!" She screamed as she fought her. Celestia watched with with tears streaming down her face and hoof over her mouth "No please Luna fight her" She pleaded as held her young sister close to her chest. "You pinkie promised me"

(Flashback)

Luna sat in her old room that was in pristine condition despite it being 1,000 years since she had last been in it. The walls smelled of fresh paint and the scent of cleaner stung her nose.

Celestia watched her sister with pain filled eyes. She thought that when she came back she would be as happy and cheerful as she was as a filly yet, her sister was cold, quiet...

"I thought you wouldn't appreciate your room being dusty so i cleaned it before your arrival" Celestia said a bit cautiously before walking to her sister's side. The mare smiled a bit but it was gone as soon as it appeared.

Luna walked the walls of the room with longing eyes. Celestia watched as her sister reacquainted herself with the area. "Celestia... Did thou ever miss me" She mumbled softly. A lone tear slid down Celestia's furry cheek "Of course my dear sister" she said confidently walking towards the young mare. "I realize my mistake. I was foalish and blind I don't expect you to forgive me right away but...I, Pinkie Promise, I will try my best to be a better sister to you." Luna looked at the mare with confused eyes. "Pinkie Promise?" She questioned tilting her head.

"Yes it's a promise that you can never break" Celestia said running her muzzle through her light blue mane lovingly. Luna's face grew a light blush as she snuggled into her sister's embrace. "Well I Pinkie Promise that i shall never allow Her to take over" Luna said with a serious face. Celestia smiled "Cross our hearts and hope to fly, Stick a cupcake in our eyes" She says holding her hoof to her eye. Luna follows her sister's lead and giggles a bit.

(End of Flashback)

Luna nods smiling weakly at the memory. "Forgive me dear sister" She muttered her eyes fluttering closed.