Kazuki's Castle, the next morning

Kazuki woke up when the light of the sun was over his closed eyes, he sat up before he opened his three eyes, then he got out of the bed and went to the bathroom. Once there he he simply used Yomotsu Hirasaka to open a small portal above his head that was connected to a dimension with only fresh water.

The Ōtsutsuki let the cold water wash over his naked body, his skin was white, as was his hair and eyebrow. With the exception of his head his entire body was completely free of hair and the iris of his three eyes without any Dōjutsu activated and his hair are white with a hint of lilac. His body had a muscular and yet slender figure similar to a well trained swimmer.

The only hint of color on Kazuki's body was his nails, carefully done and painted purple, eight Magatama (勾玉) tattooed just below his collarbone with four on each side, two on the underside of each forearm with one on the wrist and one in the middle of the forearm, a row of three from his shoulders to just above his elbow, a vertical row of four more Tomoe on the middle of his chest, a circle of ten on his abdomen around the center of his belly, twelve on his back with six on each side, three on the outside of each thigh and two on each shin.

Each one of these 54 Magatama on Kazuki's body was a seal made to refine and control his power, they were made using a combination of Fūinjutsu(封印術, Sealing Techniques) and Majutsu. They were normally black, but could change color depending on the power that was used and now they were purple with golden outline.

Kazuki closed the portal and proceeded to pull a small tray with many herbs and small rocks he collected yesterday after his encounter with Jewel. Using his chakra he extract the oils and salts to be used as soap and shampoo to clean himself. After he was done he reopened the portal and let the water wash over him again.

With his bath done Kazuki raised the temperature of his body to evaporate the remaining water on his skin and hair. With that done he made a hand seal while he was walking toward the door and a puff of smoke later he was wearing black pants and a long-sleeved fishnet shirt.

Kazuki walked out of the master bedroom and went to the throne room to check on the progress of his “guest”. Once he arrived on the throne room he saw the purple sphere now double the size it was yesterday, but what mattered was the the black alicorn floating inside.

She had black coat and feathered wings on her back, her mane and tail were like the night sky full of stars, she was about 9ft tall, as tall as Celestia, had G-cup breasts, wide hips with a light blue crescent moon on a dark purple background on her cheeks and a muscular physique that didn't hide her womanly figure.

(Without the armor)

The one inside was Nightmare Moon, initially a piece of Luna but now it was a separate entity and Kazuki was giving her a new body. A body similar to that of a alicorn but also with properties of a Black Zetsu.

Kazuki activated the magic circuits around his eyes so he could do a Structural Analysis spell on her body and he could tell that she would wake up in a few hours. With that done he turned around and walked to the library.

“Good morning Kazu,” said Hon as she floated near Kazuki as soon as he entered the library and she showed the mask of a smiling child.

“Good morning Hon, how are you today?” asked Kazuki as he greeted Hon with a smile.

“Much better, thank you for asking,” said Hon.

Kazuki remained in the library until noon, when he felt the sphere of chakra cracking, so he put down book he was reading and went to the throne room

Once there he witnessed sphere of chakra slowly fade, leaving Nightmare Moon behind and Kazuki caught her before she could reach the ground by using his own telekinesis. Once he did that he teleported both of them to the master bedroom using magic instead of chakra and laid her on the bed.

Then he picked a chair, sat beside the bed and summoned the book he was reading before being interrupted. Half an hour later he finished the book, so he reverse summoned it back to the library and summoned Hon to him.

Hon looked around before her eyes settled on Nightmare Moon, seeing that she was out of the cocoon of chakra she turned to Kazuki and showed him a confused mask.

“I just wanted to read something while we wait,” said Kazuki.

“I'm happy to oblige,” said Hon with a happy mask before she settled in Kazuki’s left hand and opened herself to him.

Kazuki activated the Rinnen Sharingan on his forehead to read Hon’s content, it was late afternoon when Nightmare Moon started to stir. She opened her eyes, which showed her slitted pupil, cyan colored iris and sclera. She looked around until her eyes landed on Kazuki. Abruptly she tried to sit up, but suddenly felt weak.

“Easy there Moon, I just made a body for you. It might take a while for you to recover all your energy,” said Kazuki as he deactivated his Dōjutsu and closed his third eye.

“Kazuki...” said Moon as she tried to remember what happened to her, she trapped her sister in the sun and destroyed the Elements…

“The Elements!” said Moon as she tried to sit up again only to be gently push back.

“It's ok. Now you have a new body independent of Luna's,” said Kazuki but he saw that she was still confused so he activated his Sharingan on both eyes while he looked into her eyes and said, “sleep.”

“Are you sure it was a good idea?” asked Hon as she floated beside Kazuki and observed Moon. She didn't have an opinion about Moon yet and as far as she was concerned Moon and Luna were to different people.

“She still adapting to her new body,” said Kazuki as looked at the sleeping alicorn.

“Well, at least it won't be as boring as I thought it would be,” said Hon as she showed a mask with an interesting expression.

A month later

Moon recovered in two weeks after she emerged from the cocoon of chakra, she was quite surprised when she saw not only Kazuki but also that she had her own body. During the last month Kazuki would occasionally use the Byakugan to see how things were on Ponyville, the show didn't tell all about the normal days, the ones without a adventure or a friendship lessons.

So far Kazuki witnessed “The Ticket Master”, “Applebuck Season”, “Griffon the Brush Off” and “Boast Busters” occur on the last month, he also met Zecora while he was on a morning walk, coincidentally on the same day Moon woke up from her coma, the zebra was surprised when the timberwolves managed to corner her since she was usually able to avoid them, but in the last month the timberwolves changed.

They no longer were made of mostly rotten wood that was animated by the magic of the forest, now they looked like true wolves but green and brown, clearly still made of plant matter. His connection to the Everfree caused the wolves to become more like the White Zetsu and they were under his complete control since they were an extension of the forest.

Kazuki stopped the wolves from killing Zecora, who immediately noted he was a sage by the Natural Energy around him, and ended up inviting her for some tea at his castle.

Kazuki took his time to inspect the zebra, she was a bit taller than himself, had a muscular yet feminine figure that was almost completely exposed since she was wearing only wrappings on her chest and a loincloth, clearly not ashamed of her tribal origin and lastly she had a staff/walking stick to defend herself with.

On the way to the castle the zebra asked if Kazuki was a sage, which made Kazuki ask her how she knew about it in the first place and she answered by saying that she was a shaman trained to feel the flow of Natural Energy even if she couldn't use it directly. Interestingly she only spoke in rhymes.

Zecora's reaction was quite amusing when she saw Jewel and Moon on the table having lunch, which lead an interesting discussion where one would question the other about their “relationship” with Kazuki.

Jewel was quite possessive, like most dragons, and didn't want to “share” her master with anyone. Moon still had the memories of Luna until she was hit and separated by the Elements, but she suspected that Luna's memories as Nightmare Moon were fragmented. And Zecora was fascinated by the existence of a sage since they were extremely rare.

Kazuki defused the situation when he explained how he met each one of them, but of course that didn't stop the animosity between the three or Moon’s smug attitude since she technically met him thousands of years ago. At the least Zecora was the most reasonable of the trio since she just met him today and wasn't interested in him as a “master”, for now.

The tea was served by a diamond dog that was acting as a butler. Kazuki found out a week after Jewel started to serve him that she controlled a pack of diamond dogs, she apparently ate the last alpha when he tried to steal from her.

Jewel saw an opportunity and offered protection as long as the pack regularly brought gems to her. Now they were under Kazuki's command, so he taught them what they need to know to better serve him, in this case how to be a butler. He knew they couldn't learn everything so he taught just the basics.

At least he made sure to pay them for their services, it was easy for him to use Shōton(晶遁, Crystal Release) to provide gems for them, gem that were now part of their diet and in their own words “the tastiest gems they have ever eaten”, a opinion that Jewel agreed with.

Kazuki also made sure to teach all pack members what he felt it was necessary. On a side note some of them were very intelligent but uneducated and they ended up as his assistants on the lab he set up on the basement. It was quite fortuitous that this pack kept the "runts" of their litters instead of either killing or leave them behind like many other packs did, since they were born with smaller paws they were ideal to do works that required a greater degree of dexterity and fine motor skills –bigger paws was a highly sought after trait that helped them excel in fighting and digging.

Given this facts it was no wonder that the runts gladly accepted the opportunity to prove themselves useful to the pack by learning mechanical, medical and similar skills that would help Kazuki greatly in the future. Everyone had the potential to be useful, in the end it was a smart move that Kazuki approved of. Otherwise he had to spend even more time reeducating the older members of the pack since one of the things that he found to be a grave sin was to waste resources.

Kazuki was always a curious person, so when he was Displaced, a fact he discovered by watching other dimensions/universes with his Rinnen Sharingan, he did many experiments to learn more about his powers. One of his favorite archetypes was the “mad scientist”, granted he still had some lines he wasn't planning on crossing but as they say “no plan survives contact with the enemy”.

Unfortunately for Kazuki it was this very reason that led Celestia, Luna and Discord to jump to conclusions about his experiments and his intentions. At first Discord didn't want to help the two sisters, but in the end, he gave in. The trio not only fought him but also managed to set up the trap that weakened Kazuki just enough for the sisters to imprison him.

Kazuki saw how bad Discord felt about betraying him, so much so he broke any ties he had with the sisters only to come back years later and usurp their rule to make Equestria into his playground.

Anyway, with the help of his new assistants, he was attempting to recreate a portal to his old fortress, it used to be on the Badlands before it was a desert but it was no longer there. Kazuki hoped that the fortress was moved from there since he built that to be a flying fortress like the Ō no Miyako no Toride (王の都の砦, Fortress of the Empire) from Sora no Kuni(空の国, Land of the Sky) and the Hanging Gardens of Babylon: Aerial Garden of Vanity ( 虚栄の空中庭園, Kyoei no Kūchū Teien).

Unfortunately Kazuki never had the opportunity to test it and he also made a barrier to hide it even from all his Dōjutsu combined since there was a remote possibility of another Ōtsutsuki coming to this planet, so he wanted to be ready, just in case.

Because of that Kazuki was unable to find the place, but his old lab in the fortress had a portal there, so if he could recreate that same portal he would be able to connect both ends. Luckily the schematics of the portal were on Hon along with his notes.

Anyway, after the meal was finished Zecora stayed for a few hours to have a friendly conversation with Kazuki, who much to the delight of the zebra was capable of speaking zabrican since he lived as a zebra on few reincarnations, he spoke a older dialect but he was able to have a conversation with the shaman. He learned that her rhymes were an unfortunate quirk of the translation spell she used.

Since then Zecora would come to visit Kazuki occasionally over the course of those two weeks to drink some tea and talk. While there was still some animosity between Jewel, Moon and Zecora, they were at least civil with each other. Especially since Jewel moved in and brought her former hoard with her saying that it should stay here since it was Kazuki's.

Kazuki also spent a lot of time with Moon teaching her about chakra, her body converted her magic into chakra, which was just the addition of Physical Energy, but that unfortunately messed up her control and she had to relearn how to do many spells. However now she was able to use chakra as well as magic and she had an affinity for Inton(陰遁, Yin/Dark Release), no surprise there since she is associated with the moon and dreams.

That would further develop her original abilities since Inton was about “the spiritual energy that governs imagination that could be used to create form out of nothingness” in other words shaping illusions. Unfortunately, she liked the Teacher-student relationship a bit too much for his liking, sometimes he cursed his ability to feel the emotions of others since he can feel her lust.

These private lessons interfered with his time in the lab and the lesson he was giving to the diamond dogs under his command, but he was immortal and patient, so he was in no hurry to complete the portal, for now. On a side note, most of the warrior diamond dogs were somewhere between genin and chūnin level ninjas, it might take almost a year for some to reach jōnin.

Currently, Kazuki and Moon were on an isolated part of the Astral Plane, not too “far”, for lack of a better word since physical measures had no meaning in this plane of existence, from the dreamscape that Luna patrolled regularly. The “place” they where took the form of a sky “above” them being reflected by the calm surface of the water “beneath” them.

Kazuki was wearing a full-length high-collared plain white kimono(着物) and black pants, he was also without his shoes and gloves. He was floating above the water in lotus position while 12 Gudōdama(求道玉, Truth-Seeking Balls/Orbs) floated behind him in a circle, in the center of the circle was two Shakujō(錫杖, Sounding Staff or Monk Staff) rotating counterclockwise and clockwise.

The one spinning clockwise had a circle with six rings on one end and a plain ringless circle on the other while the one floating counterclockwise had a cross on one end and two crescent moons back-to-back on the other.

In front of him was Nightmare Moon, also floating in the same position, was wearing a short light blue kimono, biker shorts and like Kazuki was without shoes or gloves. She was trying to meditate here in order to better use and understand her chakra, but she would open one of her eyes to peek on Kazuki.

*whack*

“Ouch!” shouted Moon as she held her head after being hit by one of the Shakujō.

“Concentrate,” said Kazuki not having moved from his position while the ringed Shakujō was floating beside Moon.

“Why are you so mean to me Kazu?” asked Moon as she made a cute face, only to be hit again.

“During the lesson I’m your sensei. Now focus or you won't be able to master your chakra,” said Kazuki as the Shakujō went back to its original position behind him.

After what seemed hours, again time much like space had no meaning there, and a few more whacks on Moon’s head they left the Astral Plane and returned to their bodies on the castle. They were meditating on one of the rooms that Kazuki converted into a dojo.

“That will be all for today. If you need anything I will be on the library,” said Kazuki as he got up.

“Before you go can I ask you something?” asked Moon.

“Of course,” answered Kazuki as he stopped at the door.

“Why do you used so many neighponese decorations on the castle?” asked Moon referring to the nation on the other side of the world.

“Have you ever wondered who taught them this style in the first placed?” asked back Kazuki before leaving the dojo, not even staying to see the confused and later shocked look on her face.

On the way to the library he was stopped by Jewel and a diamond dog, by the dirty jacket he was wearing he was a simple miner or scout.

“Master/Boss!” said both of them at the same time, only for Kazuki to motion for them to stop.

“You first,” said Kazuki as he pointed to the diamond dog.

“Boss, there is another pack encroaching on your territory, for now they stopped on a rock plain just east of the forest. They may invade our tunnels soon,” said the diamond dog with urgency in his tone.

“I see. Just reinforce the patrols there, wait for now, but inform Rex that he is allowed take any additional measure he finds necessary,” said Kazuki.

“I will inform Rex immediately,” said the diamond dog as he left to inform Rex, the former second, now third since he his under Kazuki and Jewel, in command of the pack.

“And you?” asked Kazuki as looked at Jewel, who waited patiently despite the fact she wanted to speak urgently as well.

“Master, another dragon settled in your territory. He or she took up residence on the cave of the mountain on the northwest edge of the forest,” said Jewel.

Kazuki wanted to confirm his suspicions so he activated his Byakugan and looked at the mountain Jewel spoke of. There he saw a familiar trail of smoke coming out of a familiar cave and at the base of the mountain was Twilight and her friends climbing up to confront the dragon preparing for a nap. It was the events of the episode “Dragonshy”.

*Sigh*“Let’s deal with the dragon first,” said Kazuki before he made a cross hand seal and created a single Kage Bunshin(影分身, Shadow Clone) in a puff of white smoke.

Jewel was surprised by this technique since she never saw anything like it before, while she was surprised the clone went to the library and the original made another hand seal. Another puff of white smoke later Kazuki was wearing his travelling cloak, sandals and gloves.

“Let's go,” said Kazuki as he walked toward the castle’s gate followed by Jewel close behind.

“Master, what was that? That double, I mean,” asked Jewel curious about that peculiar technique.

“That was a Kage Bunshin or Shadow Clone. It is a corporeal copy of the user, in this case me, that has a portion of the original's power and is capable of transferring it’s memories back to the original once is dispelled,” explained Kazuki.

“Really? That sound like a useful ability,” said Jewel as imagined all the uses of such technique, some uses were more kinkier them others, noted by her perverted giggle and slightly nosebleed.

“This makes the technique ideal for spying, since the user can simply send a clone to spy on a target, then have the clone disperse itself without having to return physically and pass the information back to the user. Unfortunately they can usually be dispelled by hitting them with enough force and the chakra will be lost but if they or the original release the technique almost all the chakra used will return,” explained Kazuki as his right eyebrow twitched when he felt a spike of lust.

The explanation brought Jewel back to reality and out of her fantasy, which was good since they arrived at the gate. Kazuki then jumped sat on her right shoulder, she unconsciously used her right hand to make sure he wouldn't fall.

“Doton: Keijūgan no Jutsu,” said Kazuki as he placed his right hand on his own chest and his left on Jewel’s shoulder he was sitting on.

Jewel felt strange when she moved, so she did a few small jumps to discern what was the difference, when she noticed what it was she asked, “Am I lighter?”

“I just reduced mine and your weight. Now it will be easier to fly and harder to be detected,” said Kazuki.

“Remind me to kiss you after this,” said Jewel as she looked at Kazuki, then she asked, “do you know how much a girl would like to be able to just lose weight like this?”

“Yes I do, but this is only temporary,” said Kazuki much to the disappointment of Jewel.

The dragoness jumped and manage to lift herself a significant distance with a single beat of her wings, it took some concentration but she manage to find a comfortable rhythm with her new weight.

“Meisaigakure no Jutsu,” said Kazuki as he made both him and Jewel invisible about halfway to their destination.

Once they arrived they landed above the entrance of the cave, just in time to see the mane six arrive as well and take off their respective backpacks.

Fluttershy was a 5ft 7in tall pegasus pony mare with a butter yellow coat, a light pink mane and tail both slightly longer than the average pony and teal eyes, she was quite voluptuous, which was rare for a pegasus, she was wearing a light brown sweater, light blue pants and light green sandal like shoes.

Applejack was a 5ft 9in tall earth pony mare with a light orange coat and a blonde mane tied by a red ribbon near its end, a similar ribbon of the same color at the near end of her tail as well, like Fluttershy she had a voluptuous figure but more muscular, which was more common in earth ponies, she had forest green eyes, was wearing a light brown stetson hat on her head, loose overalls, a flannel shirt and boots.

Rarity was a elegant 5ft 7in tall unicorn mare with marshmallow white coat, azure eyes and well kept and stylised purple mane and tail in vertical curls, her figure was more modest but still beautiful, she was wearing a green and brown camouflage jacket, long pants, shoes and a hat that were quite elegant, which told Kazuki that they were more for fashion the functionality.

Rainbow Dash was a athletic 5ft 6in tall pegasus mare with light blue coat and a rainbow colored unkempt mane and tail, which gave her a more wild and careless look, and magenta eyes, she had a lithe physique, was wearing a black sports bra, shorts, fingerless gloves, bracers on her elbows and knees, and lastly simple sneaker like shoes.

Pinkie Pie was 5ft 6in tall earth pony with light blue eyes, a pink coat and darker but still pink cotton candy like mane and tail, her figure was similar to Applejack's but more on the chubby side of the spectrum, she was wearing a white t-shirt with many splashes of color, yellow shorts and sandal like shoes.

Twilight Sparkle was a 5ft 5in tall unicorn mare with a violet coat, purple eyes, her mane and tail were dark blue with a purple and a pink streaks, she had a modest figure but it was easy to tell that she didn't get out much, she was wearing a simple blue sweatshirt and dark almost black purple pants, both with stars on it, and sneaker like shoes.

All in all, a group of six young beautiful mares in their own way that were late-teens to early-twenties.

“What we should do master?” whispered Jewel as she tried to not be noticed by the ponies below.

“Let's wait and see,” whispered Kazuki before he activated his Byakugan to see what was going on inside the cave, but became intrigued by few facts he noticed.

“Oh, that's interesting,” said Kazuki.

Author's Note

Here are the links to the inspiration for the floating fortress: Land of the Sky and Hanging Gardens of Babylon.
Down here are links of more or less what I had in mind for the mane six looks like. You also should check out some of their other artworks.

Mane six here and here.
Fluttershy
Rarity
Pinkie
Rainbow
Twilight
Applejack
As well as Zecora here and here.

Sorry but I couldn't find pictures that fitted the descriptions perfectly. As for Nightmare Moon picture, it wasn't easy to find, most images that I found were about Luna. Anyway, thanks for reading.