Author's Notes:

In case you may have forgotten what's going on, right now Celestia is rewriting Sunset Shimmer's past. Oh yes. In the chapter before I mentioned an Equestrian gene. That just means the gene that makes her a pony.

I have a special thanks to Ferhog, whom I dedicated this story to. Thank you for the constructive feedback! I'll definitely try to improve with your advice in mind.

As soon as the spell hit immediately her life flashed before her eyes, literally. Above them hovered videos of the events in Sunset's life. Days of when she was Celestia's student passed them overhead. Sunset was constantly reading. She read while doing everything from walking to eating to talking. Like Twilight, she had no time for friends. But suddenly, the mare in the images changed into a human girl and so did those in the images around her. Instead of her being in a castle, she was in Canterlot High.

The floating pictures rapidly changed to her upbringing. Her parents were fine mare and stallion. They raised her and loved her with all their heart...until they died. It was a horrific illness that took them and left the foal all alone. It was Celestia who took her in and made her her student. Again, the ponies became humans and Celestia became an entirely different person. She was a lady who ran an orphanage.

Sunset Shimmer grimaced and twitched as she slowly transformed. Her bottom hooves slowly became feet covered in boots. The ponies there gasped as they watched the transformation and the images.

Then, as if pressing the fast forward button, the pictures zoomed to when Sunset Shimmer became corrupted with greed for the crown. She wanted to become a princess. Celestia did not think she was ready. The events unfolded as Sunset tried to get the crown, was caught, and then she jumped into the human world.

The events changed as predicted. It changed to her being an ungrateful orphan girl to the orphanage lady who then kicked her out of the place. From then, everything stayed the same, even when she went into Equestria to steal the crown from Twilight.

All the things that happened flashed before them. Sunset became popular and liked, but it soon got to her head and she turned wicked. She dated Flash Sentry up until then when Flash realized she was using him and was turning evil so he dumped her. She ruled the school until Twilight Sparkle came and went.

She became a humble person, but everyone ignored her and treated her as she did them, except for Applejack, Rainbow Dash, Rarity, Fluttershy, and Pinkie Pie. The five friends formed the Rainbooms shortly after the events of the first fiasco.

As they watched, it became apparent that Sunset Shimmer was depressed. When she tried to make a new friend, the person hightailed. When she was walking down the hall carrying something heavy, some jackass would trip her. When she got a good grade, everyone treated her worse. Sunset started to cry more, sleep less, and lose weight. Her friends never noticed her depression because every time they were around she'd put on a fake smile.

During The Battle of the Bands, it was really a time when her levels of depression went up and down dramatically. She was glad to see Twilight and thought she could make a good impression with the Sirens before the rumors hit. But soon everyone became bratty, conceited jerks and fought all around her and she stood by uselessly. Even her friends argued. And she couldn't help but feel like nothing would make anything better. She watched Twilight struggle with the song she was working so hard to create, but they knew, her and Twilight secretly, that it wouldn't work.

She felt left out of the Rainbooms since no one asked for her help(until the end) and everyone said something insulting about her at least five times. When she was needed was her happiest moment. She felt she had people on her side and helped defeat the Sirens.

But that didn't help her look better in the eyes of the students.

No more was she a unicorn now. Her hind legs became longer with knee length boots and a skirt. Her torso was stretched and covered by a tank top and her signature leather jacket. Her front legs became long arms with hands clenched into fists. Her muzzle no longer existed as there was a small nose followed by her lips. The only thing about her that was the same was her eyes, one good and one bad, and her hair.

Those that had never seen a human before were entranced by the strangeness before them. Sunset Shimmer laid weakly on the ground. She had absolutely no energy to move. All magic was void in her body. Celestia sighed deeply and looked down at her. "You should've just stayed where you were. You have friends there. Because you came back, your stay there is indefinite."

Using what power she had left, she transported her to the human world and used a spell that would never permit Sunset Shimmer through to Equestria. Twilight could see it was raining heavily on the other side and the girl almost right away was soaked. Sunset Shimmer slowly got to her knees and looked back.

Pain.

It was pain in her eyes. It was so deep and sorrowful that Twilight couldn't help but tear up a little. Something told her that Sunset was truly trying to make things ok between them. But Celestia's utter rejection had hurt her so badly. Even Sunset's unseeing eye was full of the sadness that had plagued her since she was small. Twilight could see it all. The life she saw before her, full of despair and grief, had been changed yet the girl still remembered.

She still remembered.

Twilight knew so. And suddenly, she felt guilty. She had just watched all those terrible things and didn't even try to step in to help her. Celestia may have changed the past, but it wasn't at all for the better. It was still, on a certain degree, just as sad as her real past. The purple pony kept staring at Sunset.

What Celestia did was wrong.

A sudden flash of lightning erupted in the human world and the sad expression Sunset had changed in an instant. Instead of her look of defeat came a dark face of anger. No more was she pitying herself. Her face was shadowed and her eyes reflected hate with every fiber of her being. It was nothing like anything Twilight had ever seen. Not even beings like Sombra or Chrysalis had so much hate in their eyes.

Sunset vanished without warning and Twilight's heart quenched.

Something told her that if she didn't act fast, all hell would break loose.