Once upon a time, before the time of Equestria and even the time of the Celestial Sisters, ponies lived in a very different world amongst side many other sentient species in peace and harmony. However this peace was shattered when a great catastrophe befell the world.
A massive shooting star collided with the moon, shattering it into countless stone pieces which nearly destroyed the world with it's force.
Chaos, fear and strife broke out between the surviving species as they fought with one another for survival, forgetting that they have once been friends and family.
In the end only two remained, a human and a pony, both ready to kill the other and become the last living creature in the world.
However when they both realized this, the two ceased their fighting and decide to live out their remaining time together. They traveled what was left of their once beautiful world, sharing everything and anything they could, from their happiest to saddest experiences, memories of their lost loved ones, and their past hopes and dreams that would never come to be.
Eventually the two succumbed to hunger and thirst, lying side by side as life left them and embraced as the closest of friends and family. With a smiles on their faces the human and pony died together side by side.
The elder gods who have been watching the two were moved by their bond and decided to honor the two by reviving their dead world. From their bodies two divine trees sprang forth, the Trees of Life and Harmony, their energies revitalizing and bringing balance to the world.
Soon life began anew with life flourishing all over the lands. The humans and ponies, guided by the spirits of the Trees of Life and Harmony, worked together to maintain balance, harmony and peace through the world.
However, this peace wasn't meant to last.
Over time the ponies as guardians of the Tree of Harmony were blessed by their tree with three unique gifts. One group was gifted with great strength and a strong bond with the earth and plants, another group were given wings to soar the heavens and control the weather, and the last group were given horns to channel their power and perform amazing feats.
The humans however received nothing from their charge the Tree of Life as it's sole purpose was to maintain the life energy, chakra, that sustained the world. This led for some of the humans to resent the ponies who were blessed by their tree. This led to some of the humans to resent those who were blessed by the tree, and it lead to a lustful desire and a great war for the power of the trees.
War raged for years, the death and chaos slowly killing the two divine trees and the world itself.
Desperate to stop the wars, a young woman and pony came before the two trees and broke an old taboo. They ate the trees' fruit which contained immense power and where transformed after eating them.
The pony the fruit of the Tree of Harmony and gained all of the abilities bestowed onto her fellow ponies. She gained given a horn, wings, a strong bond with nature itself and grew bigger then other ponies. She became the first alicorn.
The young woman grew two horns that resembled rabbit ears, a third divine eye, all seeing sight and many other godlike abilities.
Working together the two ended the wars and restore peace and balance to the world. Revered as gods the two lived amongst and lead their people, who adored and worshiped them. Despite the love of their people, the two goddesses' yearned to have children of their own. A yearning that was fulfilled by the wills of the Trees of Life and Harmony.
The entire world celebrated the births of their goddesses' children, both having twins. The human goddess had two sons while, many years later, the alicorn had two daughters. They raised their children together with great love and care, teaching them how to use their inherited gifts.
Sadly despite all the light in her world, the human goddess succumbed to her darkness, one that stemmed from fear that her own children would become corrupt or become targets of those that wished to use them for their own gains and sparking another great war. To avoid this and end all conflict, pain and suffering forever the goddess decided to trap all living beings inside an endless dream and shared her goal with her friend the alicorn in hopes that she would aid her in her endeavor.
To the goddess' surprise her long-time friend refused to take part nor allow for such a horrid fate befall the world, leading to a battle between the two of epic proportions. In end however the alicorn was beaten by the goddess but was saved by the intervention of her two sons, who opposed the goddess' plan.
Enraged the goddess went and absorbed the Tree of Life in order to take back her sons' chakra, becoming a monster whose power shook the very earth itself. Despite the odds against them her sons were able to defeat the goddess and seal her away, separating her body, spirit and power to prevent her revival.
With the aid of the alicorns the two sons set out to end the conflicts that have began after the goddess' defeat, a difficult task since most have come distrust and fear them because of their power and relation to the goddess herself.
After many moons the alicorn, who was nearing her end due to wounds from her battle with the goddess, feared that the Tree of Harmony would either perish or suffer the same fate as it's sibling.
To prevent this and for the sake of her little ponies and other creatures she declared that her daughters must take the Tree of Harmony along with their little ponies and other species to a new home. After saying her tearful goodbyes the alicorn used the last of her strength to open a portal to a new realm.
As the alicorn daughters bid their farewells to their old friends they bestowed the eldest son's own two children a special magic that, when used together, would back them back should peace return to the world or if they were in great need of the ponies' aid.
To this day we still wait for Indra and Ashura to call us back.
-H-A-R-M-O-N-Y-
Finishing her story Luna looked down from the window that let in the night sky and meet the gaze of a wide-eyed little filly, smiling at her bright expression.
The filly's coat was regal black and had a long purple mane. Her turquoise eyes had dagger-shaped pupils but the whites of her eyes were also off. Instead of white, they were a lighter color that closely resembled the color of the irises. But what really stood out was the fact that the filly had not only a pair of pegasus wings but a unicorn horn, making her an alicorn. Her cutie mark was a night-blue kite shield which tapered off to a single point at the bottom and crested to a single point on top. The blue color was steely, with a slightly lighter-toned metallic highlight that almost looked like a narrow crescent moon.
“Wow! S-so humans are REAL!?” the filly, Nyx Sparkle, adopted daughter of Twilight Sparkle, all but shouted in amazement. “Lyra isn't some crazy crackpot? Uh, I mean she wasn't making them up?”
Luna stifled a giggle at Nyx's flustered excitement and stammering over having called another mare a crackpot. The little filly had been staying at Canterlot with the princesses' while Twilight was busy with an assignment from Princess Celestia herself. Something to do with Starswirl the Bearded or something. Luna had offered to look after Nyx while Twilight was busy, to connect with what was the closest thing the Princess of the Night had to a daughter/little sister. The two have been reading about old Equestrian folklore and Nyx had asked her about the humans that a unicorn in Ponyville had been going on and on about.
“Yes Nyx humans do exist however none have ever set foot in Equestria. At least not to my or Celestia's knowledge.” Luna said with a sad smile as she thought back to her time with the two-legged people. “All that we have left of them are legends and myths that have been passed down through the generations.”
Noticing Luna's sadness, Nyx tried to get her mind off it with some questions. “So what were they like? Is it true that they looked like pig-monkeys? What was their culture and society like? And what magic could the human goddess's sons do? And what were they like? And what about the elder son's children and their mother?”
The excited filly failed to notice Luna's slight flinch at the last question but the princess hid it with a small, warm smile. “Now, now settle down Nyx, it is almost time for you to retire to bed and there is simply far too much to tell about the humans and the Otsutsuki clan's powers.”
“Oh.” The little filly said with disappointment as her ears drooped.
“But I can tell you a few basic things about them and we can continue tomorrow, with my sister sharing her time with the humans as well.” Luna promised and couldn't but laugh and smile at Nyx's cheerful 'yay!'.
For the next fifteen minutes Luna told Nyx about the human species. Their diverse cultures and beliefs, diet, need and fondness for clothes, over all appearance (even admitting that she had found a few attractive), and their ability and tenacity to adapt to any environment but extreme natures, but took caution not to share too much of their darker aspects despite Nyx's past life as Nightmare Moon. She just started to talk about the goddess's sons when she was interrupted.
“Luna it is time for Nyx to go to sleep.” Celestia said as she walked into the room, a guard and a maid following her. Luna looked at her sister then back to Nyx, who was trying hard to stay awake but was adorably failing.
“Aww-yawn, can I least he-yawm-ar-AAH!” Nyx yelped as Luna's magic lifted her over to the maid and settled the filly on her back. The little alicorn shot the moon princess a glare/pout which earned a laugh from the other occupants of the room.
“Goodnight Nyx, sleep well.” The Princesses said to Nyx as the maid and guard walked out, giggling at the pout the sleepy filly gave them before slumping down on the maid's back and her ensuing light snoring. After the filly and her escort left the room, Celestia turned to her sister and saw she was staring out the window, lost in old memories.
“Thinking about them again, Luna?” Celestia said giving her sister a sad and understanding smile. “About Hagomaru and.... the boys?”
“Yes dear sister... I... miss them.” Luna quietly said, a tremble in her voice caused by a deep pain of longing. A white feather tip met her face and wiped away the tears she didn't know she was shedding. Celestia held her close in a comforting and warm embrace, her own tears flowing.
“As do I sister.” Celestia said in a similar tone as memories of two young children playing with her and Luna flowed through her mind.
“Do you that Indra and Ashura are still...?” Luna began before falling silent.
“I can't really say dear sister. They might have obtained immortality like we have or they might have... passed on. Personally I rather not dwell on it.” Celestia confessed as she shook such thoughts away before giving Luna a small smile. “I am certain of one thing though.”
“And that is?”
“That Indra and Ashura had each other and together they helped one another find happiness, as I'm sure they worked to carry on their father's will.” Celestia said with a confident smile. “Those two could do the impossible when they worked together.”
“Like the time you taunted them and they ended looting your private stash of sweets and sake?” Luna said with a smirk and giggled at Celestia's embarrassed look.
“Please don't remind me of that Luna.” Celestia muttered at the memory, Hagomaru having scolded her for the incident that followed after the boys took a sip of her speical sake.
After getting herself under control Luna looked up at the moon. “Still though sister, do you think that we will ever be called back to our birth place?”
“I can't say sister, we only gave the summoning scroll to Indra and Ashura which they have to use together in order to summon use.” Celestia said with a sigh. “Chances are that they couldn't end the wars before they passed on or perhaps they lost the scroll at some point.”
“Well what abou-” Luna suddenly felt a shiver rundown her spine, as did her sister. “Sister did you feel that?”
“Y-yes I did.” Celestia said with a stammer. “A summoner's link and call but why are we both sti-”
“PRINCESSES!” Nyx's guard ran into the room, a look of panic and dread on his face. “NYX HAS BEEN ABDUCTED!”
“WHAT!?” The princesses joint yell echoed through out their castle and Canterlot, waking everypony who wondered what was going on.