Warning: There are acts of extreme violence and threats of rape to underage children, all of which is I do not approve of, it is only there for important character development.

The Uchiha twins:

3 years later:

The Gremory House is one of the most powerful and influential families in the whole underworld. The riches they have are beyond any mere mortal's comprehension, same goes for their Mansion.

The Gremory Mansion is just outstandingly huge and beautiful, even by other devil's standards, however, most of the remaining Pillars also have mansions of their own rivaling the sheer size of this grand mansion.

Everything was quiet and peaceful until a loud noise that sounded eerily similar to a blast resonated from The Gremory Mansion. The blast was so sudden and so loud that it scared most of the people passing by this enormous house.

The source of this blast came from one of the forest areas within The Gremory property. Just as the aftershock of the first blast died down, another blast went off and this one was even more powerful than the previous blast as it shook everything within a radius of a few kilometers.

As we move towards the source of these blasts, we can see two figures standing about twenty meters away from one another as they looked at each other with scrutinizing gazes as if trying to study the other and guessing the next move of their opponent as dust and the smoke cleared up, showing these figures clearly.

As the dust settled down completely, it revealed one of the figures to be other than Sirzechs Lucifer, one of the four satans of Underworld himself. Sirzechs appeared to be just fine other than a few scratches on his armor and a very big bruise on his right cheek.

In comparison to Sirzechs, his opponent appeared to be worse for wear as his shirt was totally obliterated, if he had any from the beginning, while his pants were also in very bad condition having what appeared to be dried blood on them. This figure seemed to be no older than a kid of 14 years of age except his physic just screamed otherwise. This kid has some serious muscles for someone so young even though his face still has baby fat on it. The reason he looked like a 14-Year-old was due to the amount of training he had done and his unnatural growth, despite only being 8 years old.

This person is none other than Naruto Gremory, the adopted son of Sirzechs and heir of the Gremory Family.

Naruto was panting hard as he tried to stay awake and keep on fighting but it was becoming harder to even breathe properly as he stumbled a bit and fell down to his knees. Immediately after seeing his son falling down, Sirzechs appeared next to him and said, "I think that's enough for today Naruto. You have done more than enough for one day. Take some rest and we will continue our spar later on."

Looking up at his father with some difficulty Naruto said through his pants, "I can still keep on going, father. Let's just fight a little bit more, I nearly had you with my last attack."

Sirzechs smirked and said, "Yeah right you're a thousand years too early to even think about challenging me and remember the last time we continued to spar until you were unconscious.", he finished going pale. Meanwhile, his thoughts are way different than his words, 'This kid is fucking terrifying, at the rate he's is growing he will be able to beat me within a 3 years max.'

Naruto went stiff at the mention of his mother and the scolding he and his father got from her for going overboard while training last time, which resulted in him passing out due to the strain he put his body through. He still can feel some phantom pain from the cheek pinching that she gave them that day.

So doing the smart thing, Naruto nodded his head signifying the end of his training session for today and made to stand up but due to extreme exhaustion he ended up stumbling again and would have fallen flat on his face had his father not caught him.

Chuckling at his son, Sirzechs looked towards the audience who were watching the two fight, well it was more like a single-sided fight. Looking at one of them in particular, Sirzechs called out, "Fleur, would you please take Naruto to his room so he can rest and make sure to clean him up first as it seems he has already fallen asleep and won't be able to do so himself."

Nodding her head Fleur quickly ran up to the father and son duo and took Naruto swiftly and gently from Sirzechs with practiced ease as if she had been doing this for all of her life. In the last three years, Fleur has grown into a very beautiful teen whose beauty can be easily compared to the likes of Grayfia.

Now at the age of fifteen, Fleur has grown taller and gained a voluptuous figure with ample physic which has well-proportioned assets in all the right places. Her dress for the most part remained the same.

Picking Naruto up in a bridal style with ease, which caused one of the remaining audience to laugh at the scene, Fleur swiftly moved in the direction of the main building of Gremory estate and where Naruto's room exists.

Just as she disappeared from the view, Sirzechs turned towards the remaining two people in the training field other than him. The first person standing on the right side was none other than his sweet little sister, the apple of his eyes, the cutest girl in the whole universe (in his mind), and the one who can make him do nearly everything with just a single pout. This girl was none other than Rias Gremory, second in line for the heir of the Gremory Family and also the third child of Vanelena and Zeoticus Gremory.

Rias is a young girl only a few months younger than Naruto. She has white skin along with blue-green eyes and the infamous red hair of the Gremory family. She appeared to have some baby fat on her face and arms but that is to be expected since, unlike Naruto, she never bothered to train her body and looked every bit like a seven-year-old kid.

The last person standing in front of Sirzechs was a young boy about a year older than Rias and a few months older than Naruto. He has short spiky black hair and violet eyes. His build was nearly similar to that of Naruto's, clearly showing the amount of physical exercise this boy put himself through. This young man is none other than Sairoarg Bael, former heir of the Bael family. He along with his mother was banished from said clan's main house because he does not possess the famous Power of Destruction of his family.

Sairoarg's father blamed his mother, Misla Bael for his lack of inheritance of Power of Destruction and banished the two to the countryside and made his younger half-brother Magdaran Bael the heir of their clan. When his aunt Vanelena found out about this she immediately sought the two out and brought them to Gremory estate with her. At first, the mother-son duo was against the idea but soon accepted it when they saw that Vanelena was not going to give up on taking them with her.

After arriving at the Gremory estate, Sairoarg for the first time met Naruto. He had met Rias before when she along with her parents came to Bael estate in order to introduce Rias to her mother's family but this was the first time when he met Naruto. He had heard rumors from his clan members that Naruto is supposed to be some sort of second coming of Lord Isshiki with the amount of raw potential and power the boy has.

Naruto also seems to inherit some form of the Power of Destruction too which just pissed him off, so he challenged Naruto to a fight. What happened next was more of a massacre than a fight as Sairoarg never even stood a chance against the young Gremory despite him not even using any sort of magic during their fight. This was just the first of his many defeats he faced at Naruto's hand which just pissed him off more and made him bitter towards everyone other than his mother.

Finally having enough one day Naruto instead of fighting Sairoarg, asked him to talk and find out what his deal was.

Flashback begins

"Naruto, fight me! I will beat you for sure this time!", Sairoarg challenged Naruto who was currently lazing around in his room with Rias and Fleur.

Today was supposed to be anime night and they had to watch anime together as per Rias's order. It wasn't like he had to follow her orders, it was the other way around in actuality seeing as he is the Heir, so Rias has to follow his orders according to the clan rules. Despite all of this he never ever tried to order Rias or anyone else around. He loves Rias way too much to treat her like that and his mother had made sure to drill the fact to respect others in his head.

There were several occasions where he got too arrogant for his own good but those cases were quickly beaten out of his head either by Grayfia, Sirzechs, or Vanelena. They made absolutely sure to teach their children the true meaning of respect, compassion, love, and family. Even Rias was no stranger to this method.

Anyway, today was supposed to be an anime night and Naruto was currently using Fleur's lap as a pillow as the said girl was stroking his red hairs softly all the while smiling softly at her master, whereas Rias was browsing through all the anime series that they have in order to select one for tonight.

Their peace was disturbed when Sairoarg barged in the room causing Fleur to stop smiling and give him a frown, Rias to stop her browsing and look up to see what this commotion was about and Naruto to let out a tired sigh as he picked his head up from Harmosa's lap and sat up, causing said maid to frown in Sairoarg's direction even harder.

Letting out another tired sigh, Naruto looked at Sairoarg first and then the other two occupants of his room and said, "Rias, Fleur, please give me a moment to talk alone with Sairoarg. I will call you back when we are done with our talk."

Immediately Fleur stood up, bowed, and said, "As you wish Lord Naruto. I will be waiting outside till you are finished with your talk."

After that Fleur left the room but not before giving Sairoarg one last glare. Meanwhile, Rias stood up with her hands placed on her hips, her cheeks puffed up as she tried her best to glare at her best friend/ nephew/ brother figure, "You are not gonna skip on me again are you Naru. This is our special night. You promised that you will watch twice the amount of anime with me for missing out on our last time."

The relationship between Rias and Naruto is, to be put simply, complex. Seeing that she is his aunt, seeing as both Naruto's adopted father and his actual mother are or were siblings of Rias. Despite that, however, they act more like best friends or Brother/sisters, with him being the older brother as it would be really awkward to call someone so small Aunt.

Since they were little both Rias and Naruto have been nearly inseparable. They always ate together, bathed together and most of the time even slept together as she would constantly infiltrate his room at night, not that he minds sleeping with her as she is one of his most precious people.

Moving back to the topic at hand, Naruto sighed again as he stood up from his bed, took hold of Rias' shoulders, and said in a calm voice, "Rias I promise that we will watch whatever you want as soon as I am done talking with Sairoarg. So please give me a minute or two. Ok?"

Still looking at Naruto with a pout on her lips Rias raised up her pinky finger in front of his face and said, "Pinky promise?"

Smiling Naruto interlinked his own pinky finger with her and replied, "Pinky promise."

Happy at the promise made between them, Rias smiled brightly as she laid a big sloppy kiss on Naruto's cheek and ran out of the room.

Just as Rias went out of the room, everything became quiet and awkward for the two boys as they tried to think of a way to start their conversation. Soon coming out of his awkward stupor, Sairoarg asked Naruto in an impatient tone, "What is it that you want to talk about Naruto? Make it quick so that I can kick your ass once and for all."

Looking towards Sairoarg and putting on his best stern face, which looked ridiculous on someone so young, Naruto finally asked what has been bothering him for a while, "Why do you want to beat me so badly Sairoarg? What is it that you have against me? Have I done something to offend you other than beating you at our spars?"

Now this threw Sairoarg off the loop as he had not expected Naruto to ask that. Quite frankly he thought that Naruto sent Rias and Fleur out just so that he could make fun of them without getting caught, but apparently, he thought wrong.

Quickly regaining his bearing Sairoarg looked at Naruto as he raised his fist and spoke angrily, "What do you mean, why do I want to beat you? Isn't it obvious? If I can beat you then it will prove that I am powerful and my father will have to take mom and me back. You have had everything given to you on a silver platter, while I on the other hand was banished from my home just because I can not use Power of Destruction. It's not fair. I haven't done anything to deserve this kind of treatment from my own family!"

Now, this shocked Naruto. He never knew that Sairoarg felt this way about him and he doesn't know why but he can somewhat understand where exactly these emotions of Sairoarg's are coming from. Naruto has everything that Sairoarg ever wanted and this has led the young Bael to believe that if he can defeat Naruto then everything will become alright. However, there are some problems with this plan.

The first being that Naruto was a Gremory, not a Bael. And while defeating him would prove the Bael as competent but it still won't return him to his former position in his clan. And the second problem was that while Sairoarg was strong, very much so for his age, he was still no match for Naruto because unlike him, Naruto is both a genius and a prodigy that has been training for the last three years non-stop and this training has been done under the supervision of some of the Strongest Devils ever.

Shaking his head in order to clear such thoughts from his head, Naruto looked and Sairoarg and spoke in an understanding tone, "You are right Sairoarg. I do have it way easier than you but you also have to understand that Power of Destruction is just a tool. It is only as strong as its wielder. If you really want to become strong then do something about it instead of just complaining and trying to pick up fights with stronger people. You have no idea how hard I have to train in order to be as strong as I am today. You want to get your old position back then train. Train until every bone in your body breaks and then train some more. There are no shortcuts to gain power in this world Sairoarg and even if there are then they can never make you as strong as you can be with good old hard work."

Listening to such compassionate words rendered Sairoarg speechless as the only thing he could do was stare at Naruto in shock and think about the words coming out of the redhead's mouth seriously.

Seeing that his words are getting into Sairoarg's head, Naruto continued, "If you fall then get back up and try even harder than before. If you are all alone then ask for help and know that there will always be people who will be more than happy to help you. You are not alone Sairoarg, you have a mother and you have us. We are family and I will help you in any way that I can. I will help you become stronger Sairoarg and I promise that soon you will have your former position back."

Naruto then placed a hand on Sairoarg's shoulder and asked, "So what do you say Sairoarg? Want to train with us from now on?"

Sairoarg eyes were shadowed by his hair and were trying his best to control his tears. Finally having gained somewhat control over his overwhelming emotions he muttered, "Yes let's train and grow stronger together but you will always be my eternal rival Naruto and don't you dare lose to anyone before we have our ultimate showdown."

Smiling at his new friend/rival Naruto replied, "Hai, and you too Sairoarg. Don't lose to anyone before that. It's a promise of a lifetime."

"Yes it's a promise of a lifetime.", Sairoarg replied as he shook hands with Naruto, solidifying their promise.

"Well, we should call Rias and Fleur back before they get angry. Come on Sairoarg watch anime with us. At least that way I can have some guy company too.", Naruto said as he moved towards the door to call Rias and Fleur. While Sairoarg just nodded and followed behind him.

All the while, these two were completely unaware of their respective mothers' presence, who were quietly listening to their children's talk and were smiling at each other, obviously proud of their respective kids.

This was the day that gave birth to the friendship of the future's strongest devils to ever exist.

Flashback Ends

Smiling at two children in front of him, Sirzechs beckoned them to come closer and said, "Now it's your turn to spar with me Sairoarg and while we are fighting, Rias, why don't you practice your long-ranged attacks. After that, we can work on fine-tuning them. Ok?"

Nodding their heads both kids quickly get to their tasks as another Fighting(beating) ensued.

And that's how most of the days at Gremory Mansion went for its occupants.

LINEBREAK

1 year and 6 months later:

Many humans think that the underworld is a place where the souls of dead people go. They believe that people who have committed some sort of sins have their souls taken to the underworld by some sort of demon and then are tortured for eternity. These kinds of stories were made up by humans to stop their people from committing atrocities, not that it ever stopped those who wanted to do bad things to other people.

Many humans believed that the Underworld exists beneath the Earth's surface. This can not possibly be any more of a lie.

All of these tactless and baseless guesses are just that, guesses. In truth, the Underworld exists in a different universe than Earth and no, there are no flesh-eating zombies or soul-eating demons in there, well not anymore at least.

The Underworld is big as Earth itself but it didn't have any oceans so it has much more land so to speak and is inhabited by various species. The main two species who call the Underworld their home are Fallen Angels and Devils.

Both factions along with Angels have been in a cease-fire for hundreds of years since the end of 'The Great War'. And this ceasefire was much needed too as there had been too much death and if it had continued any longer then all three races would have ceased to exist. Of course, there had been a few skirmishes here and there but they were quickly dealt with in order to maintain the already fragile peace between 'The Three Factions'.

Right now we find ourselves in one of the barren countries in the Underworld and the sight that greeted us is that of a young boy doing what appeared to be training while his parents and the rest of the satans were away for an important meeting. This boy is none other than Naruto Gremory and right now he is training his body to make it more durable along with practicing hand-to-hand combat at the same time.

He was unnaturally tall for his age standing at about 5'6 his upper body was bare and he was only wearing black shorts and a pair of sandals. His arms and back were decorated with some sort of tattoos that look like magnatama. These tattoos have always been there on his body for as long as he can remember. His mother and father told him that they are some sort of birthmarks, not that he minded them since they just made him look that much more exotic and it was something that he inherited from his real father.

Yes, Naruto knew that he was adopted by Sirzechs and Grayfia. He had known for a long time now since his parents never wanted him to not know about his real parents, especially his mother who was the heir of the Gremory clan before she died and passed on that title to him.

Naruto knew that they were not his biological parents but he still loved them like they were. Why shouldn't he? Sirzechs and Grayfia had been awesome parents to him till now. They both loved him more than life itself and had been the best parents that anyone could ever hope to have. Whenever he was afraid, they were always there for him. Whenever he fell down, they were always there to pick him up. Whenever he felt restless, they were always there to calm him down. He truly can not ask for better parents but that does not mean that he will ever forget about his real parents. No, he can never forget them as he loves them just as much as he loves Grayfia and Sirzechs, and they will live on through him.

Back on the topic, other than his weird birthmarks, Naruto also has a resistance seal present on his stomach and a huge gravity ruin that spreads for around 10km in radius, inscribed on the land set at 120 and 100 times respectively for the fatal gravity of 12000 times that of the underworld. This is his way of training his body and the extra gravity can never stop his height from growing or have any other adverse effect on his body because of his instant regeneration which far surpassed even that of the Phenex family.

His healing factor is one of the major reasons as to why he can train so much and can take on so much damage without any problem, though that doesn't mean that he can not feel fatigued. He can very much feel tired as his healing factor depends on his magic which while a lot is not infinite (yet). This has been proven when he had literally trained to the point of passing out many times in the past.

This barren land is one of the properties owned by the Gremory family and Naruto continuously made use of it to practice his more destructive attacks.

Naruto mostly liked to train in quiet and peace as well as alone as he was doing right now but he knew that it was practically impossible for him to do so as Fleur always kept an eye on him. When asked why she does that every time he goes outside, all she replies is that she is his tool, his maid, and his bodyguard. She can not possibly let him out of her sight for even a single minute without any kind of protection for him, despite knowing that he can take care of himself easily. They had this conversation so many times that he had finally given up and let her do whatever she wanted to do.

And that's exactly what she was doing, keeping an eye on him ... from 11km away ... with the help of magic.

Just as he was about to start practicing his magic along with hand to hand combat, he heard a loud explosion resonating from about 20km away and a huge cloud of smoke that covered the area but it was clearing up soon.

Being the curious kid that he was, Naruto quickly began running in the direction of the explosion as Fleur also joined him by appearing through a teleportation circle.

Glancing at his left, he saw Fleur running alongside him and looking at him as if waiting for an order. Smirking at her mischievously, Naruto said, "Let's go see what we have at our hands Fleur and if we are lucky then we just might get a chance to kick some ass."

Nodding to her master and smiling softly at his attitude, Fleur nodded her head as the duo made their way towards the crash.

LINEBREAK

In a crater that used to be a massive hidden compound.

Satsuki and Izumi Uchiha were scared they had been running away from the mad man that had massacred their family, Fugaku Uchiha, their own father. They saw a mountainous forest where they could hopefully get a good temporary hiding place.

Flashback begins

It was a normal day for the young Uchiha twin sisters which consisted of playing and training as they were called in for breakfast. They suddenly heard loud screaming from their mother. They quickly ran to their house and they saw their mother's still-beating heart in their father's hand as he crushed it.

They cried in fright as their father turned to them and Satsuki cried out, "Why father, why did you do this?"

He turned to them, took a step forward, and said, "You want to know why I did this, do you?!"

They took a step back and Satsuki shakily squeaked out a yes.

He took another step forward and laughed creepily, "Do you know why? Because she was weak and now I'm going to kill you because you two are too weak to be my children!", as he launched himself towards them.

Izumi activated her Sharingan and pushed Satsuki and herself out of harm's way as Fugaku punched the ground and it fractured into a giant crater.

"How do you have those eyes, you're not supposed to have those eyes, you are a weakling!", shouted Fugaku as he activated his own Sharingan and pushed it further into the eternal magecue Sharingan. It looked like 2 triangles inverted over each other.

Izumi took Satsuki and started running away from him as fast as they could, which for a couple of eleven years old is pretty damn impressive but unfortunately is nothing to a highly trained super devil and he quickly caught up to them.

Thinking quickly, Izumi started mentally doing enchantments to the fireball spell and Satsuki started to copy her. Fire Magic: Fireball they thought as a massive fireball appeared in front of them. Fugaku being caught off guard was caught in the middle of the massive fireball.

Satsuki and Izumi panted because the fireball took a lot out of them. Their eyes shot open as they heard their father's evil laughter again.

There he stood with a green flaming rib cage that started going down., "I was going to kill you quick and painlessly but now I am going to have some fun with you first.", he said with a predatory grin.

Satsuki thinking quickly, Satsuki said to Izumi, "Hey Izumi, remember what mother told us to do in case of something like this."

Izumi nodded quickly and they started canceling their magic into the ground. A massive array of pre-drawn ruins started glowing and made a massive explosion destroying almost everything in sight.

They were protected from the explosion by a protective bubble around them with the ruins their mother created to protect them from it.

Flashback within a flashback begins

Mikoto Uchiha had a bad feeling that her abusive husband was going to do more than just hit and verbally abuse her. Her gut was telling her that he's going to kill her soon and then he is going to hurt her daughters and so she designed a massive explosive ruin to wipe out the entire compound as a last line of defense because no one touches her daughters and gets away with it.

"So girls, do you understand that this is only to use as a last resort when you have no other options?", Mikoto told her daughters.

"Yes mother.", they answered.

"All right now a few quick questions, okay,'' they nodded, "How do you activate the ruins, Satsuki?"

"Force magic through the ground with your feet.", she answered quickly.

"Ok Izumi it's your turn, what do you always have to have with you? No matter what you are doing and what it does?", Mikoto asked again.

"The bubble protection ruin was designed specially to nullify the explosion's effect on us,'' Izumi answered.

Flashback within a flashback end

"That won't kill him, it will only stun him for a few seconds and make him madder than he already is. Let's go.", Izumi said. As they began running again.

Flashback Ends

As they ran into the forest they began looking for a place to hide. They came towards a big cliff and there was nowhere else to go as their father was just behind them with a mad look in his eyes, shredded clothes, and a predatory grin.

That was the scene where Naruto and Fleur and needless to say that they did not like it.

"Fleur get them to safety and protect them from the fight's aftershocks as I have a feeling that this man is not a normal devil.", Naruto said and from the tone of his voice, she knew he was not kidding around.

She nodded and disappeared via a flash of light and appeared in front of the girls and took them away before any of them could do anything and disappeared again with the girls.

Now Fugaku was extremely angry. He was about to have fun with his girls and then that bitch had to ruin it but before he could follow that bitch he heard something.

"Hey you bastard, why don't you pick a fight with someone who can fight back!", shouted Naruto, who did the trick as Fugaku turned to face him.

"And who is that you, don't make me laugh.", Fugaku stated as they faced each other.

"Shut up and fight asshole!", stated an angry Naruto

LINEBREAK

Somewhere else:

"Hi, are you girls okay?", Fleur asked.

"Who are you?", Izumi asked defensively.

"I'm Fleur Lucifuge, personal maid/bodyguard of Lord Naruto Gremory.", Harmosa answered proudly.

"And how do we know if we can trust you?", Izumi asked again continuously.

"If I wanted to hurt or kill you, I would have done so already.", she answered without missing a beat. They recoiled in shock that someone would answer that so casually.

"So are you okay or not?", ask Isabel again.

"We're fine.", this time it was Satsuki who was replying.

"So if I may ask what are your names?", Fleur asked after a few moments of silence.

"I'm Satsuki Uchiha and that is Izumi Uchiha.", Satsuki answered for both of them.

"Uchiha, I thought they were wiped out during the civil war, because of the traitor of your own clan?", Fleur asked.

The Uchiha clan was a powerful devil family with the ability to copy any technique as long as they had the reserves to do so. They held the title King before they were only wiped out because of an SS-Ranked rogue devil by the name of Madara Uchiha who was later 'killed' by the most powerful (half)fallen angel that ever lived, Hasirama Senju who later himself succumbed to his own injuries.

"We were we don't know the full story but from what we know is that my mother wasn't there when it happened and our 'father' survived a battle with the traitor and then we went under the radar.", Satsuki answered as she spat out the word father with enough venom to make a Hydra jealous.

"Okay, but who were you running from?", Fleur asked.

This time it was Izumi that answered, "That was our piece of rubbish father. He killed my mother and was going to rape us.", It was very rare to ever see the stoic girl show emotions; however, she just started crying before her sister also started crying. Fleur could understand why they were crying. It was every woman's worst fear to be raped and they just went through all that and much, much more. As the twins were crying Fleur tried her best to comfort them.

'Naruto you better kick that asshole's ass or I'll kick yours.', Fleur thought angrily.

LINEBREAK

Back to the fight:

They ran towards each other at the speed of lightning and their clash created a deafening shockwave that destroyed the surrounding area from sheer air pressure alone and did a complex pattern of deadly hand-to-hand combat.

"You're pretty powerful for a stupid brat, brat.", Fugaku insulted.

"And you're pretty fast for an old man, old man." Naruto taunted.

Fugaku got angry and threw a right hook which Naruto blocked with his left arm and took the opening that the hook left to counter with a mean uppercut to the mad man's stomach which connected. Fugaku coughed blood as he skidded to a stop about a kilometer away but didn't take time to recover from it as he rushed forward again.

This time channeling magic to boost his already impressive speed even higher. Using the momentum of the super-fast speed he punched Naruto into a massive 6000m tall mountain about 5km away vaporizing it instantly. Creating massive shockwaves that flattened everything in over 100000km².

As Naruto stood up in the middle of the massive crater he was regenerating his vaporized arm that he used to 'block' the blow. He then started to power up to his current full power making a giant earthquake that started to shake the country they're in. Unknown to anyone, a seal that sealed almost all of Naruto's powers and abilities that he inherited from Isshiki to protect himself and others is starting to crack and will break soon.

Fugaku felt his eyes widen for a fraction of a second only to narrow again before he started to laugh madly powering up to the point where the power they were releasing started to shake the entire continent apart and create massive cracks that started spewing lava. Before they started rushing at each other again.

Silence the whole world seemed to turn silent before an absolutely massive shockwave tore through the earth like a hot knife through soft butter destroying the entire country they were in. Fugaku threw a right kick that Naruto blocked with his left knee as he countered with a left jab that Fugaku blocked with his right forearm before the two went on through complex hand-to-hand combat each blocked or parried punch and kick creating shockwaves capable of destroying any lesser beings.

They broke apart from each other and as if reading each other's minds started to form techniques.

Fire Magic: God fire Fugaku thought, as he spewed a tsunami of flames hotter than the core of the sun.

Pure Destruction ball Naruto said as he made a tennis ball-sized MPoD AN:1.

As the two attacks briefly clashed, Naruto's Destruction Ball simply erased the entire attack effortlessly before heading onwards to Fugaku which he easily dodged to which Naruto simply canceled the ball to not erase anything else.

Fugaku made a mental note to always dodge that, before charging up his Susanoo that continued to grow and grow to about the size of Mount Everest which is absolutely massive.

However, before he could do anything Naruto jumped tackled, yes tackled the massive magic avatar to the moon creating a massive creator with cracks spanning half of the moon.

LINEBREAK

Somewhere else on the Underworld.

"Holy shit, did you guys see that?", a random devil asked, seeing the 'small' green dot crash into the moon making a massive crater seeable from the planet.

"What was that.", another random devil said.

"I don't know we'll probably find out later on the news it will probably be related to the massive earthquakes.", said the first one.

LINEBREAK

Back to the fight:

As Naruto and Fugaku fought they were vaporizing away portions of the moon with every attack. As it was going Naruto was slowly getting tired because of the training he did earlier and it looked as if Fugaku got the upper hand because of the massive Susanoo, more experienced, and the advantage of not being so tired.

Naruto was getting tired and his chances of winning are looking slim because all of his attacks are simply getting dodged. After all, for some reason, the massive Susanoo is faster than his normal smaller form.

"When I win I will get that bitch that stopped me from having my fun and I will break her and turn her into my own personal cumdumpster.", Fugaku taunted with low-level telepathy.

Now Naruto rarely gets angry, sure he gets irritated (who doesn't) but he rarely gets truly angry but now was one of the few times he ever got so angry. He poured all of his remaining energy into a single large destruction beam.

Fugaku smirked, this is exactly what he wanted as he charged his own attack.

Ultimate destruction beam! Naruto thought as he fired a massive condensed MPoD.

Uchiha's revenge! screamed Fugaku as he launched a beam of black fire hotter than anything else in the universe at the moment.

The two very different beams clashed with a massive explosion of destructive energy that deatomitized the entire moon. The beam of black fire was so powerful that it started eating pure destruction and continuing until it almost reached Naruto.

As the beam of black fire continued until it almost reached Naruto's face he saw his entire life flash in front of his eyes all the times with his family and friends, the good and bad he felt something within him snap and a sudden rush of energy that he channeled into his attack that started growing exponentially until it almost reached the size of the Susanoo and then plowed through the fire beam and engulfed Susanoo and reached an unknown amount of distance after that. Naruto threw himself at the underworld before he drifted off into space before he passed out not because of physical strain or lack of energy but due to mental strain.

Naruto fell back to the underworld but as he fell he was caught by someone.

"Don't worry baby mommies got you.", Grayfia whispered into Naruto's ear after kissing his forehead.

Nobody noticed that the head of Fugaku that somehow survived disappeared as if it was an illusion.

Chapter end.

AN:1 Mutated Power of Destruction.

The end.