Noxraa: Hi there, Noxraa Torgan here taking a moment out of Vessel of Harmony to bring you another Naruto and My Little Pony crossover. This one is very different in premise however to Vessel of Harmony. That is because the story didn't come from me. So without further ado I present the writer behind the idea for Somber Leaf, Mellra.

Mellra: Thanks Torgan. I read the MLP comic FIENDship is Magic that detailed King Sombra's origins and I couldn't help think; he is actually really similar to Naruto. Both are orphans, both were treated as outcasts, both had dark secrets about their origins, etc. The only difference is, Sombra gave in while Naruto didn't. That got me thinking, what would happen if these two were to meet? And then I thought about how some stories have characters from different series being sealed inside Naruto during the Kyuubi Attack and figured why not do the same with King Sombra?
Around this time, I began reading Vessel of Harmony and noticed how well Noxraa Torgan was able to do a Naruto/MLP crossover. So I decided to ask if they'd be interested in my idea and they said yes, so big shout out to Noxraa Torgan for listening to my madness! Here's hoping you all enjoy this story and all the fallout that will come from King Sombra being sealed in Naruto! Later!

Pain. Sheer agony beyond description.

That was the feeling King Sombra had when the Princesses of Night and Day had used their powers against him, turning him into shadows. The two so called benevolent rulers of Equestria had ripped him from his physical form; and they had the nerve to call him an evil king. Then, to add insult to injury, they had dared to banish him from the world of Equestria all together! This wasn't right. This isn't how it was supposed to be!

The dark king knew that the sisters would most likely defeat him when he heard of their coming thanks to the betrayal of Radiant Hope, but he had expected them to just send him back to the frozen wastelands where he originated from. Instead, he found himself being thrown out of the world he was destined to rule. Even now, after what felt like eons had past, King Sombra was trying to make sense of the world he was in.

In the world the overthrown king found himself in, ponies weren't the dominant species. Instead there were these strange creatures that looked like furless monkeys that he learned through observing them in his shadow form were called 'humans'. At first they seemed like weak, pathetic creatures. Even more pathetic than the Crystal Ponies, truth be told. However, Sombra soon learned that their appearance was deceiving.

While a large portion of their population were noncombatants, their soldiers displayed abilities that would probably even give an alicorn pause. The name chosen for these warriors was 'shinobi', or Warrior of the Shadows. Sombra, as a Shadow Pony, could see the irony of the situation, and also saw a possible opportunity with his banishment.

While he didn't expect to find himself banished into a completely different world, his curse on the Crystal Empire was still in effect. He could feel it, and when the Empire was to return in 1,000 years, so would Sombra. In the meantime, though, if he could find a way to harness the power of these shinobi, King Sombra saw this as a way to conquer Equestria with no contest! He would be able to defeat the alicorn princesses and their pathetic armies, regain his Crystal Pony slaves, free his umbrum brethren, and take over what is rightfully theirs with the power these shinobi possessed. The question was, how would he go about using their power to his advantage?

In his current state so far away from the magic of Equestria and the Crystal Empire, he was very close to powerless. His most prominent powers available at this time was his ability to travel through shadows and manipulating the minds of other beings. The downside to the latter is most shinobi have the mental discipline capable of resisting his manipulations, and he feared that pushing it would cause the shinobi to become aware of his presence. So he waited, watching, for the perfect opportunity to seize the power of the humans.

King Sombra was floating above the Village Hidden in the Leaves when he felt it. A crushing power, more so then he had ever felt before, practically saturated the area. Cautiously, the dark king went to investigate. What he saw caused the tyrant no small amount of surprise. Attacking the village was a GIANT fox with nine tails, and the shinobi fighting it seemed nearly powerless to even drive the beast back.

Immediately, Sombra saw an opportunity. If he could find some way to control the fox, or at the very least get it over to his side, he would be able to take over the Crystal Empire and Equestria in no time at all! Hay, he might even decide to expand his empire here in the human world if the Nine-Tails was as strong as he thought it was. However, there was still the same question as with the shinobi on how to take advantage of the fox. He didn't have long to ponder this though, as what appeared to be the village's leader arrived on the back of what seemed to be a giant toad to fight the beast. The battle was short but intense, ending with the blonde haired man using what looked to be a teleportation spell on the fox and transporting them out of the area.

The dark king nearly panicked as he frantically searched for where his future weapon had been taken, worried that the shinobi might destroy it before he could claim it. He didn't have far to look as he found the fox, along with the leader and a red haired woman and a newborn baby, in a clearing a distance from the main village. The man and the woman appeared to be pierced by one of the fox's enormous claws (Sombra idly noticed the fox seemed smaller than before and tied up in ethereal chains), and the two humans were talking to the baby in what must have been their final words. Sombra saw his chance, with the fox weakened by whatever ritual the humans had done to it, the umbrum could use his magic to take over the beast's mind. In his shadow form, the former ruler of the Crystal Empire flew towards the fox, his mouth forming a sharp toothed grin.

However, just as he was about to touch the fox to take over its mind, a bright light emitted from the man and engulfed both the fox and the dark unicorn, and all Sombra knew was darkness.

King Sombra groaned as he stood up. "Where…am I?" he wondered as he looked around his surroundings. He appeared to be in a mix between a dungeon and a sewer, with a pool of water formed at his hooves and pipes crisscrossing over the walls. It was then he noticed that he was trapped behind a large metal gate.

"What is the meaning of this?!" He roared in anger as his red horn glowed a dark purple color. Shooting off a concentrated blast of dark magic, the unicorn figured that his prison stay would be ended then and there. It was to his chagrin that the magic just seemed to harmlessly bounce against the bars before dissipating. Seeing that brute force wasn't the answer, Sombra took his shadow form and tried to simply float through the bars. The key word here being 'tried', as the moment he reached the bars he was thrown back by some sort of invisible barrier. Taking solid form once more, the king began to pace in front of the bars while trying to figure out what was going on.

"Well isn't this interesting. And here I thought I would have to wait for the brat to come visit me before I had any form of social interaction, yet here is a little pony being graced by my presence," a dark and sinister voice rumbled from across the room that was shrouded by darkness.

"Who's there? Show yourself!" Sombra demanded as he looked through the gloom.

"Hmph, quite the arrogant tone you're carrying little foal. We'll have to fix that now won't we?" The voice said in what the king believed to be a mocking tone. Just then, the darkness seemed to recede a little and Sombra could see across the room. On the other side was another cage that was easily ten times larger than his own, and held within the cage was none other than the Nine-Tailed Fox!

"You?! But, how did you…why are you…" Sombra began to stammer as he tried to comprehend why such a powerful creature was trapped in such a pathetic looking prison. Calming himself, the dark stallion then narrowed his shadowy green and red eyes at the Fox and said in his usual commanding air, "Where are we?"

The Nine-Tails gave a fanged smirk before answering. "First of all, you better check your tone with me in the future little colt, for even behind these bars I will find a way to show you how far beneath me you truly are. As for where we are, we were sealed inside that blonde infant those two humans were protecting. I can only assume you were stupid enough to get in the way as the sealing was taking place and now you are trapped in here with me until the day the brat dies."

Sombra's mind raced at the implications of the Fox's statement. He knew of sealing from his time observing the shinobi and he had seen them seal away objects like their tools and supplies in scrolls. This seal, however, must be absurdly powerful if it was able to imprison both the Fox and himself inside of a living being. The dark king decided that those were questions for later, as this beast had to know just who he was messing with.

"Watch your mouth you insolent cur! I am King Sombra, once and future ruler of the Crystal Empire in Equestria. I have vanquished princesses and placed countless ponies under my hoof! If you think I shall be intimidated by an oversized fox, then you are sorely mistaken!" Sombra barked as he gathered his dark magic around himself.

The Fox's only reaction was to quirk its brow. "A king, eh? That might be impressive if I have ever heard of a place called the Crystal Empire or Equestria, which I haven't."

Sombra sneered, "Of course you haven't, mongrel. It's in a completely different world from here. Through…extenuating circumstances, I was banished to this world until I regain my full power. Then, I will take my rightful place as not only king of the Crystal Empire, but ruler of the whole of Equestria!"

The Kyuubi gave a bemused look at this. "Sounds like quite the interesting tale, little pony," he then got into a more comfortable position on the floor and said, "Perhaps you can tell me more. After all, neither of us are going anywhere for a while. Then, perhaps, I might tell you a bit about my magnificent self."

While the Dark King didn't want to tell the arrogant fox anything, the pony remembered that he wanted the Fox's power on his side, so perhaps indulging the creature's curiosity may be the first steps in swaying the beast into helping him. So with that in mind, Sombra told the giant fox his story; how he was found in the artic wastes in the land of Equestria, his time in the orphanage, his friendship with Radiant Hope, his mysterious sickness during the Crystal Faire, the vision the Crystal Heart showed him, the discovery of his true nature, the defeat of Princess Amore, Radiant Hope's betrayal, the fight with the two Princesses, and finally his banishment to the Shinobi World after placing his curse upon the Crystal Empire.

Throughout it all, the Kyuubi listened without interrupting, his expression remaining blank. It was only after Sombra finished his tale that the Kyuubi spoke.

"And how do you plan on taking over Equestria while you are in this world, hmm? After all, now that you are sealed in this brat with me, you can't even look for a way to go back."

The unicorn snorted,

"I'm hardly as trapped as you may think. The royal fools that banished me beyond the realms of my world's reality must have believed that they would be rid of me forever. However, I made a failsafe within my curse. When the Crystal Empire shall return from its banishment from beyond the realms of time so shall I. As for being sealed in here…"

Sombra then pulsed his magic against the bars of his prison once more. He gave an evil grin as he felt that while the seal held strong against his might it had marginally weakened from his first assault.

"I can feel that this prison of ours, while made to store your 'chakra', is not made to contain my magic. While it is resisting me for now, I will only need a little more than a decade to break out of here." He smirked cruelly, "And then maybe I'll have this human we're sealed inside become an instrument for my wrath. Perhaps I'll have him wipe this village off the map under my influence, or maybe I'll take him with me to Equestria and have him destroy those meddling princesses!"

"Now that, my little pony, is a plan I can get behind," The Kyuubi remarked, getting King Sombra's attention. "Destroying those that wronged you is something that I can respect. In fact, I may even help you in your endeavors, as long as…" At this he trailed off as though contemplating something.

Barely daring to hope that it would be that simple to gain the monster's cooperation, Sombra asked, "As long as what?"

The Kyuubi smiled again, though Sombra noticed this smile was less malicious and more hopeful before he spoke again. "As long as you can ensure I will be released from this prison as well. I would also like to live in Equestria after helping you conquer it. A chance to live without having to deal with humans and not being sealed away again is too good of an opportunity to pass up!"

The dark unicorn king raised an eyebrow,

"You would leave behind the world of your birth just for the chance of not having to deal with humans?" At the question the Kyuubi let out a deep throated growl,

"Do you know what it is like to be seen only as a weapon? Since the humans discovered the method to control my kind we have been seen as nothing but assets to be thrown at our manipulator's enemies. I myself have not seen the outside world for more than an hour for the better part of a century. I have been sealed and resealed inside of human hosts without any consideration of our personal wishes." As the fox ranted on the anger and passion built behind his voice,

"The human race is vile and corrupt. They see me and my brethren as demons when it is them who are the true monsters! There has only been one human who has ever had, or who shall ever, be held in any respect in my eyes. I will forsake this world for another in a heartbeat and help you conquer your little kingdom if nothing more than to get away from a species that doesn't even bother to ask us if we have names!" The fox's final words echoed like summer thunder through the chamber and down unseen corridors. Eventually the demon's rant faded away and left the two occupants of the seal in silence.

Sombra considered the monstrous being's statement before replying,

"I will agree to this; but let us get one thing straight, I am the king and you will not interfere with my rule." Seeing the great fox nod in consent Sombra cackled, "Then we have an accord! Now all that remains is for the seal to weaken enough for me to influence this child. And," he glanced around the dimly lit sewer like prison, "Perhaps a change in décor is in order."

With that, the Umbrum stamped a hoof on the ground and the mindscape rumbled. Suddenly, the water covered floor cracked apart as dark and jagged crystals erupted forth. The water drained through the cracks and the walls of the seal began to peel away to reveal glimmering crystal gems embedded in the way. After several minutes of this, the room looked like less of a sewer and more of a diamond mine, the only things that remained unchanged was the bars on the two prisoners' cells.

The Kyuubi growled in a pleased tone. "Impressive."

King Sombra smirked,

"Quite. I figured the underground of the Crystal Empire is more appropriate a setting to be spending the next few years in. Now," At this his smoking green eyes seemed to glow maliciously,

"Let the games begin!"

Noxraa: And there you have it folks. The first instalment of Somber Leaf. If you liked what you read be sure to leave a comment in the little box below and tell us what you thought. If you really liked it share it with a friend or two. This is a shared story so updates may vary depending on who is writing the chapter; and of course life, because you know that happens. Until next time!