Author's Note: This is just a test run if folks like this fanfiction I made, so yeah. Naruto's personality here will be developed slowly and I want to make a fanfic where I can test my abilities to create a good and entertaining fanfiction. It will not be a harem like my first fanfic.

—

In a nationwide battlefield, the ground was strewn with lifeless bodies, grotesquely mangled into horrors that would induce even the most unhinged person to vomit in disgust. From torn body parts and charred remains to crucified corpses, it was a disturbing tableau. Amidst this macabre scene stood a young man in his early twenties.

With light silver hair interwoven with strands of crimson that framed his mature, strong face, his purple and gold eyes exhibited absolute boredom and a pale complexion.

Beneath dark gray, almost black, form-fitting, high-collared royal tunics, he wore black armor. The ensemble was completed with a regal-looking cape that draped over his broad and strong shoulders.

"Mi prince, Lucifer-sama has requested your presence," a man with spiky silver hair, one eye covered by an eyepatch, and a mask concealing his face bowed to Naruto. He was Kakashi Lucifuge, the mentor and bodyguard of the crowned prince, though his father would argue otherwise.

Naruto regarded the man for a few seconds, nodded, and then created a magic circle, disappearing in a black and misty whirl.

—

The Lucifer Castle, otherwise known as "Luciferus Satanael" (and yes, Lucifer named his castle after his eldest son's second name and his biblical name), stood proudly. The castle was not merely big; the term enormous fell short. Constructed with Blackstone enchanted by the strongest spells, it featured several statues of wyverns perched atop the valley of brimstone and lava that surrounded it.

Massive black gates and towering walls guarded the castle. Naruto materialized before the guards eyed them briefly, and in a burst of pure speed, he vanished.

—

"You called, Father," Naruto walked into the throne room that his father currently occupied. He shared the same features as his father, though he lacked the crimson strands, and his father's eyes burned with pure red, filled with both pride and hatred for anyone who dared to cross him.

Lucifer noticed his son, and for the first time, he rose from his throne. "Yes, I have a task for you, a task I'm sure you'll enjoy," a smirk found its way onto Naruto's pale but cherry lips.

"May I ask what it is?" Naruto questioned as he crossed his arms over his chest.

"The four archangels are moving now. My informant said they were seen surrounding Azalea, the Grigori's main base or city," Lucifer said, observing his son whose smirk turned into a full-blown maniacal grin.

"The task?"

"Take out as many angels and fallen as you can and maybe kill some higher-ranking members."

"It will be done."

—

Azelea - Grigori's Main Base.

Azelea was currently in a state of war between fallen and angels. The angels attacked Azalea with the command of taking out the fallen, but Azazel predicted this and tasked his two cadres to accompany him into battle.

'Light Magic' was thrown around like it was a party; explosions and destruction ran wild in the now-ruined city of the fallen angels. Many corpses of both fallen and angels lay within the destroyed ground. The battle had been raging for over a day now, and neither side had the clear advantage. Many were dying as a result.

The four archangels were mostly suffering from cuts and exhaustion. The same could be said for the two cadres, Baraqiel and Kokabiel, along with their leader, Azazel.

"Isn't this amusing?" Azazel chortled with a smirk. Michael only looked at him with a grimace. Suddenly, the two felt it; they had felt it before. Pure hatred and chaos mixed with a hatred that seemed to boil with every second. They sensed a lust for destruction and chaos, unmistakably the bloodlust of a particular individual. Lucifer's bloodlust was not this potent; this bloodlust was far more than just that. It was the raw and unfiltered craving for violence and an insatiable need for never-ending destruction. Only one person could evoke such feelings in the two leaders—Naruto Luciferus Lucifer, malice reincarnate.

Rafael, Uriel, Gabriel, Baraqiel, and Kokabiel all sensed it too. They turned to see their leaders blown away by a massive wave of pure darkness. Rafael, ever quick to react, dashed forward, readying his fist with holy light. However, he felt a pain burying deep within his chest. Naruto punched him without even trying, and he was blown back with such force that it destroyed a nearby mountain range.

"Now, this is what I call WAR!" Naruto shouted and lunged forward, delivering a kick coated with darkness. The remaining beings all tried but failed to evade the incoming attack and got kicked in the face, sending them all flying.

"HAHAHAAHAHAHAHAAH!" The absolute maniacal laughter of Naruto boomed into the distance as he prepared one of his daggers, the 'Abyss Eater.' "Give me my entertainment, you mongrels."

Naruto surged towards Kokabiel with the intent of delivering a downward slash that would bisect him if he didn't move away. Luckily for him, he managed it in time, only getting a slash on his face. The agonizing pain that the dagger caused, though, was not worth it.

"You! Fucking bastard! I'm going to snap your neck and eat your heart out!" Kokabiel roared with absolute fury. He saw black and blurred towards a still Naruto. Kokabiel's clawed hands reached for Naruto, only to grab at nothing. He felt a pain, an all-too-familiar pain in his back, as Naruto delivered a roundhouse kick, sending him flying. Naruto was not done; he slashed down, and a bolt of purple-on-black lightning struck Kokabiel.

Michael suddenly appeared behind Naruto, poised to stab his back, and he let him. Michael thought that he had delivered a devastating wound to Naruto, but when he looked up, he only saw an extra arm protecting Naruto's back.

Naruto gave him a cruel and sadistic smirk. "You think I won't notice it? Oh, great Michael-sama," Naruto mocked, and his back arm tugged at Michael's sword, destroying it. He then delivered a punch to Michael's guts, followed by sending the now-flying Michael into the air. Naruto summoned his second dagger, the 'Dark Heavens,' in his other hand. Dual-wielding both daggers, he slashed in an X pattern on Michael's chest, sending a gush of blood through the air.

Then, Naruto chanted the words necessary for his technique. "Plundering darkness, void abyss, dual dragon, light extermination, dominate the world."

A massive bolt of lightning mixed with Naruto's "Bloodflame" made contact on Michael as the leader of the seraph got burned and electrocuted. "Big brother Michael!" The voice of the second-strongest seraph rang inside Naruto's ears as he spotted the remaining seraph and cadre standing. He left Michael alive because he wanted to face somewhat of a good opponent in the near future, along with Azazel, but those five would have to die.

"You. Five are next in line," Naruto pointed both of his daggers as he summoned the rest of his daggers, the 'Illuminating Shadow' and 'Tri-Darkness.' He commanded the four daggers to face the opponents and blast forward with a speed that they only reacted to with pure luck. The daggers retreated back to Naruto as he commanded them to create a circle with their tips facing each other. Then, he prepared his most destructive attack yet.

Massive waves of demonic power swirled through and fired instantly. The blast was too strong even when they created high-tier barrier magic to defend; they only went so far.

A massive explosion rocked the whole city of Azelea as the city was reduced to ash along with the entire fallen and angel army that was currently battling.

In a burst of pure speed, Azazel created a massive long sword made of light and delivered a slash into Naruto's back. To his shock, it only made a cut. Then he saw the face of the madman who singlehandedly destroyed them, a smirk telling him he was about to get his shit rocked.

"Amusing at best, crow," Naruto's four daggers stabbed Azazel's front, and in a quick show of speed, Naruto slashed Azazel's entire body, sending a gout of blood.

"Disector."

The battle was over; Michael, Gabriel, Uriel, Rafael, Baraqiel, Kokabiel, and Azazel lay defeated on the ground, battered and bloodied. Naruto's maniacal grin disappeared as his smile turned into a frown of disappointment. Were these the same angels who defeated his father? These pathetic doves and crows? It was amusing at best, to be honest.

The disappointing part was that his father warned him always of Michael, the supposed angel who defeated his father. He thought that he would at least get a fight, but only disappointing frauds of flying mongrels were all he had seen.

A flash of white and silver light almost made Naruto cover his hands. But he didn't; he sensed the man's power—the only man who could hopefully give him a proper fight. The one and only Biblical God.

"Well, hello, young Lucifer..."

—

As Naruto turned around, he saw the Biblical God donning golden and white royal robes, misty golden eyes, golden-on-silver hair, and a tan complexion. The power emanating was formidable, evident in Naruto's expression shifting from boredom to a grin reminiscent of the previous battle.

"Well, the Almighty has come at last," Naruto mocked, summoning his last dagger, the 'Ominous Wind.' Five daggers levitated smoothly in the air as devil and god faced each other, neither willing to make a move.

God eyed him once and calmly stated, "I only came here to collect my children, nothing more. I don't want to kill Lucifer's first son." Naruto's grin transformed into a feral snarl as he lunged toward God with one of his daggers, but God defended effortlessly with a single finger.

Full of rage, Naruto unleashed a powerful blast of "Fire Magic," incinerating everything in its path. The fields turned black, revealing flowing lava. Naruto tripled his speed, attempting to grab God's hand and fling him into the air. However, God, anticipating the move, released a massive spear of light at Naruto, which was promptly destroyed upon contact in Naruto's darkened hands.

"What power!" Naruto exclaimed, prepared to unleash his version one Assault Mode on his formidable opponent. His Heterochromia eyes turned blood red, two additional eyes emerged beneath the original ones, his attire shredded, creating two extra arms below the original pair, and a mouth formed on his belly.

Naruto grasped three daggers, sealing the last one. Darkness and thunder crackled through the blades as he readied to confront God in his first stage. God, however, maintained a grimacing expression that irked Naruto, fueling his rage.

Suddenly, Naruto felt the impact of 10,000 punches in just 0000000000.1 seconds. God adjusted his posture as if nothing occurred, but Naruto understood the true force. Snarling in rage, Naruto unleashed a slash, sending violent electric crackles toward God, who countered with his own light magic. The powerful attacks collided, revealing a golden misty gaze in God's eyes.

Seeing an opportunity, Naruto summoned his last dagger and unleashed his "Bloodflame," combining it with the daggers. God, unable to react in time, was struck directly. Despite his defenses, he survived with only minor cuts.

Naruto persisted in his attack, summoning tentacles of darkness to slice through God. However, the Almighty countered with a well-placed light barrier. God observed Naruto advancing, armed with only two daggers and a strange hand sign formed with his additional arms.

Smirking, Naruto employed one of his abilities to counter God. He acknowledged that without high-tier to god-tier spells, he wouldn't have survived the earlier attack. With this newfound ability, Naruto could now engage the Almighty on equal grounds.

"Adaptation" the ability to simply adapt to anything and everything that Naruto found to be a danger to him. Naruto moved forward with the speed that surpassed his previous one.

God tried to deliver a quick jab on Naruto but when the jab was made it did little damage on Naruto's stomach, the damage was healed in an instant and Naruto retaliated with a swing kick that released a massive gust of wind that cut through the nearby mountain top.

"Hmm, not bad, old geezer," Naruto muttered under his breath as he unsummoned all his daggers, preparing another wave of darkness. He launched the wave, and it collided with a wave of radiant light, causing massive explosions everywhere.

In the smoke, Naruto and the Almighty engaged in a brutal display of martial arts. Naruto delivered kicks, punches, and jabs in quick succession, while God countered with his own, making it hard for Naruto to land a permanent hit. The Almighty felt his powers slowly having no effect on Naruto due to his 'Adaptation.' He quickly used a different type of magic to counter it, but again, God experienced that same sensation – the feeling of 'Adaptation' working, adjusting to anything thrown at Naruto.

'The ability to adapt to anything, it's a rare sight to see,' God mused while blocking another punch and kick from Naruto. 'I can see all his movements before he even does it, but what is this feeling of my future sight slowly wavering? Is the adaptation ability also working on my future sight?' God used Lightning Magic, summoning golden magical circles and launching them at Naruto. The bolts of lightning were countered by Naruto's own magic as he summoned a black magic circle that produced purple and dark lightning bolts.

Naruto quickly moved behind God, attempting to slice him with a blade made of darkness. However, in the seconds he saw the move, God turned around and summoned a light sword. Their blades clashed, sending sparks through the battlefield.

'I'm slowly losing even with the adaptation ability that I use. God has too many forms of magic to use on me; this battle will go on forever,' Naruto thought. He was getting overwhelmed by God's various types of magic, and his adaptation ability could only go so far. His reserves were slowly getting consumed, and Assault Mode was not a viable option with Naruto throwing around high to god-tier spells in his arsenal.

The battle raged on for more than a few hours, and Naruto was exhausted, but he was not going to lose. Losing here meant death, so he pushed himself to break his limits. With 20 percent of his reserves left, Naruto exited 'Assault Mode' as he had adapted to most of God's moves and techniques, deciding not to rely on that mode to survive. Naruto made the decision to conserve his magic and match God in hand-to-hand combat.

The better part of this was spent in a fist battle; Naruto chose this option to conserve his reserves and keep God on his toes, so to speak.

The Almighty jumped back to create distance as he saw his children slowly rise from the rubble and take a fighting stance to aid their father. Naruto, seeing this, released a sigh and readied himself to face the fight of his life. Crimson glowing eyes shifted from person to person as Naruto chanted spells to recover a tiny bit of his reserves.

"Light merged with darkness, darkness that envelops light, consuming life through death, four pillars."

Naruto gained a little bit of his reserves as he disappeared in a blur and appeared right in front of Rafael, kicking him again in the temple. Michael, as fast as he could, blocked the attack, sending a shiver into his arm. Rafael shouted, "Brother!" only for Michael to raise a hand and reassure him.

Uriel, seeing that Naruto was distracted, kicked him on the side, earning a wince from Naruto. He retaliated quickly, sending a gout of darkness that shaped into a spike, almost piercing Uriel in the process. Gabriel summoned her wings to fly towards Naruto and blasted him with a barrage of light beams, which he managed to dodge at the last second.

'This little family is getting too troublesome for my taste,' Naruto grunted in annoyance as he dodged a flaming sword swing courtesy of Uriel and managed to evade a spin kick delivered in the air by Michael. 'Absolutely amazing.' Naruto grabbed them both and threw them around, but God, along with Rafael and Gabriel, dashed towards him. With their combined effort, they kicked, slashed, and punched Naruto in several places, dropping both Michael and Uriel in the process.

Naruto's regenerative ability was doing its work, but now his regeneration was taking a lot longer. The light punches, kicks, and slashes were not fun to deal with. Naruto grunted again and circled the Angel Faction at speeds even Michael found challenging to keep up with.

He summoned Tri-Darkness and sent a massive bolt of lightning towards them to distract them for a bit.

"Brother Michael," Gabriel shouted from the smoke. Luckily for them, their father made a shield to protect them. However, Gabriel noticed that Rafael and Uriel were missing. They all looked up and saw Naruto completely dominating both Rafael and Uriel in aerial hand-to-hand combat.

The three of them flew into the air, and God kicked Naruto away from his two children. Naruto blocked with his arms, only moving back by 20 meters in the air. Blurring in sight again, Naruto made a beeline for God and kicked him below the ground, creating a massive hole in the earth.

Panting in exhaustion, Naruto only looked at the angels and God with a face of annoyance and impatience. He heard God speak up for the first time during their fight, "Young Lucifer, I'm impressed that you made it this far, facing me and my four archangels in a stalemate. But this is where you draw the line, young one. You cannot win. So, I'm going to give you one last chance to back down and leave in peace. However, if you reject this, I have no choice but to defeat you," God said. The words made Naruto cringe, and pure rage overtook him, clouding his judgment.

Fuming with rage and hatred, Naruto dashed towards the still God. His arm transformed into claws, making a grabbing motion towards God. However, before he could hit, Naruto blacked out.

Naruto Luciferus Lucifer faced defeat i match against the angels and God.

—

On the ground, lay Naruto, battered, beaten, and left bloodied by God and his four archangels. It had been a few hours since the battle had ended. Kakashi, who had just arrived at the site, searched for Naruto with the command from his father to bring him to the castle to heal.

He saw the familiar silver and crimson hair of Lucifer's heir and, in a burst of speed, appeared at the location. The cuts and beaten form of his prince left Kakashi wincing. Lucifer was going to lose it if he ever saw his son in this state. Using what little he knew about 'Healing Magic,' Kakashi healed Naruto. His wounds and cuts closed up, but the signs were still there.

Grabbing the young prince and carrying him by his shoulder, Kakashi prepared a silver magic circle to teleport out. Yet, he heard the voice of Azazel. "I guess the brat got his ass handed to him by the old man, and badly at that," the governor mused as he suddenly appeared a distance away. He commanded his two cadre to fall back since they woke up and saw the fight between God and Naruto. Azazel only observed and didn't interfere because, for once, he didn't want his ass to get beaten more than it already was.

"It seems that way, old friend," Kakashi looked at the fallen angel who smirked and flashed away to meet his cadre. 'Proper training must be done before Naruto could ever hope to meet his true potential, and I have to work on his attitude,' were the last thoughts of Kakashi as a silvery light enveloped the two of them, and with a flash of white and silver, they were gone.

Lucifer paced back and forth within the confines of the throne room, anxiously waiting for Kakashi to bring him his son. It had been 8 hours since Naruto left the castle, and exactly 5 minutes ago, he sent Kakashi to find him.

The king of the devils was sure that Naruto would survive the encounter. Hell, he heard the reports that Naruto gave the four archangels, Azazel, and his two cadre an absolute beating. The main concern, though, was the presence of his father; he felt it. The sudden drop in magical power of his son and God's enormous strength made him fear for his son's safety and his own image. Naruto was seen as the pinnacle of all devil kind, the pinnacle of demonic power. If the devils ever saw their prince lose, Lucifer was sure that some of them would lose faith in Naruto, and Lucifer couldn't have that. So, he tasked Kakashi to find his son and bring him back to the castle.

Then, the familiar seal of the Lucifuge clan appeared, and Lucifer saw Kakashi carrying a broken and battered Naruto. Lucifer's hands twitched in anger and hatred, his already crimson eyes burning a molten color with fury, glowing and radiating power beyond belief. The entirety of the underworld felt the tremors and feared for their lives as their king was angry for whatever reason.

Gritting his teeth, Lucifer spoke to Kakashi in a cold and angered-filled voice, "What happened to my son?!" The father of all devils muttered in a low, guttural voice that made Kakashi wince in fear.

Standing straight, Kakashi looked at the anger-filled face of Lucifer and spoke, "Your Majesty, Prince Naruto was defeated by God and his archangels in combat. The prince is okay and just needs medical treatment." Still, Lucifer's anger never lessened; instead, it intensified a thousandfold.

"Haaaaaaaaaaaa!"

Lucifer's hands swiped at the throne, sending a wave of darkness that destroyed it, leaving the throne as an ashen mess.

"BRING LILITH HERE. NOW!" Lucifer's voice barked, and Kakashi was already gone along with Naruto's still form.

"At once, your Majesty."

After a minute had passed, Lucifer took some calming breaths and created a throne to replace his destroyed one. This throne was now composed of pure darkness that swirled within the nonexistent wind, shaping and bending erratically. He saw Lilith walking up to the throne, and through his crimson eyes, he could see that his wife's eyes were dangerously glowing; her golden eyes that once reflected kindness now glowed with anger.

"What did I tell you? Not to go and parade OUR child and use him as a fucking weapon... you fucking imbecile..." Lilith bellowed at Lucifer, who stood his ground and glared at his wife.

"You don't have a fucking say in this matter, you stupid fucking woman! He is my SON and my heir!" Lucifer got up and lost his composure, shattered into a million pieces as he walked towards his wife and backhanded her across the face.

With reddened cheeks, Lilith was about to slap Lucifer when a feeling of dread washed over them. They both saw Naruto standing at the entrance, his mismatched eyes transformed into molten swirls of gold and red with slit pupils as he glared at his father.

"Touch my mother, and you'll lose your fucking hand," Naruto's low voice echoed throughout the room, and his powers were rising by the minute. Darkness billowed out of his injured form, and within a matter of seconds, all his injuries were healed.

The burning and still-fresh memory of the defeat he suffered from God, combined with the fact that his father backhanded his mother, whom he loved more than anything else in the world, could send someone as unpredictable as Naruto to the edge of blowing the entire underworld to ash.

Glaring at his son, Lucifer spoke in his demonic voice, "You! Stay out of this; it does not concern you!" Gritting his teeth, Naruto released his full demonic powers. Darkness enveloped Naruto, his nails formed into claws, and his molten-colored eyes glowed with power.

The entire underworld, along with Heaven and Grigori, felt it-Naruto's true power, his true potential unleashed and unfiltered for all to sense and see. "Last warning, Father! Release my mother, and you'll keep your head on your shoulders." Deep within Naruto, his emotions were erratically dancing with both hatred and sadness. Seeing his parents fight over him and witnessing his father lay hands on his beloved mother created a complexity of emotions that caused a dramatic surge of power reflecting what he truly felt: sadness, anger, loneliness, and depression.

On one hand, he cared and loved his parents very much, and it pained him to see them in this state. He was confused-confused about what to do and what actions he should take. His words tried to convey it, but his heart and soul wouldn't agree. The teachings of his parents clouded his judgment and clear thinking, leading to the unleashing of his powers.

The entire world and existence were shaking; even the great beasts sensed it-a power to match theirs, the raw and endless sea of power sensed within one devil.

Naruto's angered state allowed him to tap into his true powers and potential, but his emotions were a mess-a power to destroy all of existence as we know it, placed under someone who couldn't control his emotions and sense of mind.

A yellow magic circle with a Bael Clan seal appeared, and out stepped Zekram Bael, the first Bael to ever exist. His purple eyes zoomed in on Naruto as he examined the situation and how it started. Based on Lady Lilith's reddened cheeks, he understood what happened-the prince was angered, and due to his recent loss, couldn't contain it anymore and exploded.

"Your Majesty, what happened?" playing the fool, Zekram questioned Lucifer, but Lucifer's voice was choked out by fear. The fear that he might get himself killed by his own son and the fear of the power he was releasing, even darker, more destructive, and chaotic than his own.

Calming his nerves, Lucifer stood, albeit strained. "I-I, this power is too much!" Zekram agreed, even though he didn't exactly get an answer he could understand from Lucifer's shocked and fearful face.

Glancing towards his creator, Zekram gently supported Lilith and tried to prevent her from getting too close to her unstable child; the darkness was getting more potent by the minute. But Lilith didn't care and blasted Zekram with a concentrated magic blast.

Lilith ran towards her son and hugged him. "My baby boy, you need to calm down. See, I'm not hurt, so you can lower your powers, please. I beg of you." Lilith pleaded as Naruto, with his molten glowing eyes, glanced at his mother and saw her face filled with tears and hurt.

"This man, he hurt you... he is also my father... I couldn't hurt him; he is my father... I'm confused, mother... Please, I need h-heelp." Naruto's dark form vanished, and he collapsed onto the ground; his emotional state was a mess, and he couldn't think properly.
Glancing towards Lucifer, Lilith spoke up, "I'm taking our son to his bedchambers, and don't you dare disturb him; you already caused him enough pain as it is." With that, Lilith vanished in a flash of silver light.

Collapsing onto his rear, Lucifer stuttered to make words. His fear was still on full blast, and he couldn't think properly. 'That power is similar to when Father was in his prime.' Lucifer's thoughts were clouded by those words. Zekram, seeing his creator leave, also planned to depart and go back to his castle. However, he took a quick glance at Lucifer and saw his eyes display, for the first time, a mixture of awe, fear, and admiration.

Vanishing in a flash, Lucifer was left only to himself, pondering his son's true potential.

The truest power that can ever be held by a devil, the Power of the Abyss