One Blue Eye; One Green Eye

4,000 years ago the world was chaotic. Not for the ponies of course. Ponies had their princesses who kept balance and harmony. But the dragonequi lands were always chaotic. Barely anyone has seen what it looked like, and those who had could never give a good description of it because it was always changing, never the same. Sometimes it was mountainous, other times it was sunken like the lost city of Trotlantis. But it was only like the latter when the really messed up dragonequi were in charge. Their government (if it can be called that) works by that each year a new leader is picked by if the challenger can defeat the old leader in a fight to the death.

At this moment the lands of the dragonequi were being ruled by the black dragonequs, by Chernobog. But he is not at the center of this story. No far away from Chernobog's cavern lived our center, lived Discord and his sister Eris.

Now this was 1,000 years before Discord's reign and then defeat. During those times he was a brute and a trickster; capable of dislodging a ponies mind with a flick of the wrist. But 1,000 years before that he was a bit different; he was a loving brother and probably had never dreamed of defeating Cherbonog or later conquering Equestria. Right now all he cared about was making it to the next day and making sure Eris did too.

Although chaos and unstablity were all attributes of the dragonequi the land of the dragonequi were for many  years now a desolate and dark place. Cherbonog had defeated every challenger placed in front of him; each the same way. He would make them see what they feared most.

His spells were illusions of course, but fear is a powerful thing and some challengers had jumped off cliffs by the fears Cherbonog inspired. Even now when his darkness reigned did the dragonequi fear for their life each day. Cliffs appeared at odd spots and active volcanoes sent smoke and ash all over where the dragonequi lived. Timberwolves and manticores ran rampart and everyday one less dragonequi was alive.

But so far Discord and Eris had managed. Discord was now about 20 years old in mortal years while Eris was about 14. Having been orphaned at 12 and 6 the two siblings had it pretty good, if you called living in an abandoned, burned down village good. And having to eat raw meat some nights so not be caught by Cherbonog's press gangs good. And having to teach your baby sister how to survive will barely knowing yourself good. But they weren't dead or being forced to work in Cherbonog's mines. So, in truth they were doing pretty good cause if you are thinking clearly I'm going to guess if you were in their situation you wouldn't be where they were today. Alive.

That fateful night they were pressed up against each other between the sharp gray rock and the smooth gray rock as they hid from the press gangs that were scoping the ancient cites for any dragonequi that weren't already enslaved under Cherbonog.

They had come late that night and taken the 8 year old dragonequi that had been hiding in the house next door. That's actually how Discord and Eris had gotten out of their house before the gangs could reach them. They had woken up by his screams of protest and fear.

Now they were hiding in their backyard between some rocks as their hearts raced in fear. They couldn't see anything except the back of the house, but that was the scary part, no seeing only hearing them walk around searching for any other dragonequi that could of use to the king.

The to sibling heard the cries of the other hiding children in the town. Of the little 10 year old from down the street and his 3 year old sister, of the couple from down back alley way that had just had a new baby. Suddenly an eagle talon reached into the hollow and drew out Discord by his lion paw.

"No!" screamed Eris and grabbed Discord in a bear hug only to be dragged out by another sadistic dragonequs.

Hands wrapped around the snow white dragonequs and pried her away from Discord. Their owner called, "Got a pair of them Boss."

   "Eris," cried Discord and with that he bite the talon holding him. The dragonequs cried out and dropped Discord who ran at Eris and grabbed her hand.

"Little beast," mumbled his captor as the dragonequs dropped a weighted net over the Discord and although he clawed and screamed it was all cut short by the beating stick that was dropped down on his head.

"No!" screeched Eris, "Discord!" was her last cry as she to was knocked out as well.

Eris's captor, hastily tossed her in a net of her own. With the help of his partner they dragged the siblings back to the pair of carts that was already filled with dragonequi.

One cart was going to the east mine and the other was going to the west mine. After the pair tossed their last captives into the cart did they set off each going a different directions and each having only one of the siblings while the other was going the other way.

...

3,000 years later in the Royal Chambers was a very awkward moment. Discord was sitting outside the door; deep in thought while inside sat his sister and Princess Luna as if it was 2,000 years past and no time had past separating them.

Except time had separated them and the awkwardness was still there as the two of them silently sipped cups of mint tea. Shakily Luna placed down her cup after a long drink and stared at Eris, at those same mismatched eyes and snow white coat she had known from years past. Except something was different. Eris would never have cried publicly back then and Eris seemed almost fragile.

What had happened to her?

"Lulu?" said Eris, breaking Luna's thoughts.

"Yes," said Luna, before taking another sip of tea.

"What happened while I was gone?" she asked softly.

Luna finished her drink and took a moment before asking, "Why don't you first tell me why you were gone in the first place?"

Eris sniffled and answered, a catch in her throat, "I don't know. I... I can't remember."

She was going to start crying again! thought Luna. "No, no it's fine Eris. It's just strange to see you after, well after that long."

"Yes, so what happened?" diverting the topic back to her question.

Luna sighed and started with her jealousy and transformation into Nightmare Moon, but when she got to her banishment did she get a reaction out of Eris besides a gasp.

"Celestia would never do that," shouted Eris as she knocked over her cup. And flinched at the noise when it dropped.

Luna thought again, what happened to her?

"She did, but on-" but Luna was cut off as Eris started ranting about how Celestia was such a cruel and horrible sister and how she would pay for imprisoning Luna. All while they didn't her the door open and Celestia step through catching Eris saying, and I quote "And by Fate would Celestia pay for hurting Luna."

"I did to save my life, Eris," said Celestia. And that stopped all the ranting. Eris's pupils shrunk and she took a step back, scared.

Eris opened her mouth, but before she could ask Celestia replied saying, "Luna will tell you."

And with that she left, stopping only to bring Dicord with her.

"So..." said Eris taking a seat.

Luna sighed and started on the story of the darkest day of her life.