Barely managing to swim to the surface of the water, Superman only had time to take one breath before a devastating blow smashed against his face. Doomsday's punch forcefully sank the Man of Steel back to the bottom of the river and waves tens of feet high were spurned by the impact, flooding the entire riverbank and demolishing what was left of the bridge. The hundreds of people stuck with their cars on the bridge all fell into the water below and got crushed under massive slabs of concrete once the bridge completely broke down and fell on them.
Naruto watched the destruction with his eyes widened. It was the first time he witnessed something like that. He had killed many people before - but they were all either death row metahuman prisoners, crazy psychopaths in an asylum or corrupted government officials. He had never willingly killed innocents...
'Don't look!' Naruto said grimly, burying his sister's face into his chest in an attempt to stop her from witnessing the cruel scene in front of them. But even then, he could do nothing to stop Misaki from hearing the screams of terror coming from the people as they were crushed under the demolished bridge.
In his current life, before he met Galatea, Naruto has never cared about other people except for his sister, grandfather and - to a certain extent - Misaki's best friend, Barbara too. As a teenager roaming Gotham City's streets, he had seen more times than he cared to count innocent people getting robbed, beaten or even killed. It never really bothered him. They were strangers. He had no obligation whatsoever to risk his life to save them. They meant nothing to him. He had truly lived by the words that he said to the Doctor Fate from the future: 'I will never - absolutely never - sacrifice mine or my loved ones' happiness for the sake of others'.
But despite his general indifference towards other people, witnessing the cruel scene in front of his eyes, he was left stunned.
'So many people were killed!'
Not for the first time, he was forced to acknowledge how frail and insignificant human beings were. How the weak were like ants in front of the powerful. But the thought that popped in his mind next, made his heart turn cold:
'What if I didn't reach Misaki in time?'
'What if I didn't remember that her university was in Metropolis, not in Gotham?'
His face became livid.
'She would have died...just a random name amongst the other hundreds of people that lost their lives today.'
After more than 3 years of grieving and suffering from thinking that his only remaining family was gone, he had been blessed to get his sister back into his life. It was a miracle. It was the happiest period of time that he had ever experienced in any of his 2 lives. But now, he had been one breadth away from losing everything again!
His arms unconsciously tightened around his sister, making her grunt in pain.
''Naruto?''
Hearing her scared voice, he immediately got a hold of himself. He was about to apologise when a scream of fury reverberated in the atmosphere. Naruto and his shadow clone quickly jumped away from the river and broke into a sprint towards Gotham, in the opposite direction of Metropolis. A layer of blue charka glowed at the surface of his and his clone's body and covered the girls in their arms. With them now protected against the crushing pressure of the wind, they seemed to blur as their speed increased exponentially. It was faster than the speed even a racing car could ever hope to achieve. It took less than two minutes for them to reach their home, back in Gotham City. Any other normal day, the girls would have been super enthusiastic about how fast they had travelled and would have asked a lot of questions but, at that moment, they were still shocked by the tragic scene they had witnessed.
When he arrived home, Naruto and his clone let go of the girls and the later dispelled. He was about to unlock the door when he felt someone grabbing hin from the arm.
'Naruto...all those people...'
It was Barbara Gordon. Her voice was trembling and her eyes swimming in tears. Even someone like Naruto was rattled by the death of so many innocents, let alone a rather ordinary girl like her. And he understood what was she trying to say: that if he had immediately engaged the monster, he could have stopped the deaths of many people... But that would have meant to leave Misaki and Barbara to fend for themselves. And his priorities were clear in his mind.
'All those people...were strangers.' Naruto said slowly. 'Make no mistake, Barbara. I'm no hero. I don't care about the greater good and other such bullshit. I would never trade my family's life for that of the strangers.'
'Misaki's safety is more important to me than the lives of a thousand.'
Every time he thought of that, his despise for Minato Namikaze and Uchiha Itachi from his former life only continued to grow. In his eyes, the 4th Hokage was a bastard for sacrificing his son for the sake of the village while Uchiha Itachi was one of the worst human beings, even worse than the Joker. He could not fathom the thought of someone killing his parents, cousins, uncles, his entire family, for the sake of 'peace'.
For Naruto, his family was sacred. There was nothing that was more important than that. For all he cared, as long as his sister, Galatea and Kyuubi were fine, millions could very well just die.
'Heck, I'll kill thousands with my own hands if that's what it takes to make sure they are safe.'
As he entered the house, he led Misaki to the sofa in the living room and lighted up the fire in the hearth to warm up the house. He brought a thick blanket from his room and covered his sister with it, up till her nose. He planted a soft kiss on her forehead and said:
'I'll go make you a mug of hot chocolate. I'll be right back, ok?' Misaki could still not trust her voice to reply to him, only nodding her head obediently. The girl was still in shock from the events that had transpired.
In less than 2 minutes, Naruto was back with a steaming cup of hot chocolate. When he entered the living room, however, his eyes fell on the large screen of their TV. On it, filmed from a helicopter, a dramatic clash was taking place.
Scene break
A scream of anger burst from the chest of a blonde girl and a shockwave boomed when her deceptively feeble punch smashed against the grey monster's jaw. The force behind the blow was immense, throwing Doomsday to several hundred feet away, spiralling.
'Clark! Clark! Where are you?' the girl yelled desperately, on the verge of tears.
Activating her X-ray vision, she quickly spotted Superman, lying unconscious at the bottom of the river. With her heart in her throat, the girl plunged into the water to rescue her cousin. But she didn't get to fully submerge when something with the force of a speeding train unexpectedly hit her in the back. Her red cloak was ripped to shreds by the hit and she was sent crashing into the riverbank like a cannonball.
Supergirl's shaky hands pushed against the ground to lift herself up when the monster landed next to her. A large, iron-like hand wrapped around one of her slender legs and she was suddenly smashed brutally against the ground...several times! The girl was left in a crater, blood flowing from a corner of her mouth and one of her legs broken. The monster came above her intent to finish her off but a sonic scream impacted it face first, hurling him backwards, tumbling. The scream continued to persist and the beast roared in pain as it tried to cover its ears with its hands.
But eventually, Black Canary ran out of breath and the sonic scream stopped. Even so, the beast was not given any respite. An enormous sledgehammer smashed against its spine, a crater forming beneath it as its body was flattened against the ground.
Even though his cracked armour and his bloodied face would make Steel cut a sorry figure in other circumstances, at that moment, when he lifted the large sledgehammer with both of his hands above his head, his figure was awe-inspiring. A cry of exertion came out of his chest as he forced the entire strength of the muscles in his calves, back and arms to smash his hammer against the beast's back once again, making it roar in pain.
'Steel, you've done enough. You're on your last legs, fall back! Rescue Superman from the bottom of the river and escape!' a new voice was heard and Steel lost the grip on his hammer, finally reaching his limit. Abandoning his weapon, Steel jumped into the river to rescue the one person he admired the most in his life.
The newcomer was a seemingly naked man, with a light-blue skin and an atom-like red symbol on his chest. Captain Atom was a relatively new member of the Justice League but despite that, he had quickly earned the others' respect as a powerhouse on the level of Superman and Wonder Woman themselves. Therefore, in such a dire situation, Steel and the other surviving members of the league had no qualms about listening to his instructions.
'Black Canary, take Supergirl and retreat! I'll take care of this monster myself.'
It was extremely brave of Black Canary to come and attack Doomsday. But the blonde woman had known from the beginning that it wasn't a fight she could fight. One hit from the monster and she would be dead. It was on another level altogether. Even so, had Captain Atom not made his apparition, she would have fought to her death with no hesitation if her stalling managed to offer the civilians that were still around even half a minute more to escape. That had been her resolve when she had joined the battle. But she didn't question Captain Atom's order. Gently grabbing Supergirl's lithe body in a princess carry, she began to run away from the site of the battle.
On the riverbank, it was only Captain Atom and Doomsday left. The beast got up to its feet breathing roughly but the superhero did not dare underestimate it. In the next moment, it wasn't only his arms that were suddenly engulfed by a red haze of radiation, but his entire body! With a battle cry, an enormous ray of red radiation burst from Captain Atom's entire body and completely engulfed the bone-covered monster.
But then...a deep rumble akin to the chuckle of a demonic being came from Doomsday. The beam of radiation had melted the entire side of the riverbank and even the river's water was instantly evaporated on a segment of several hundreds of feet from the extreme heat...the corpses of the hundreds of people that had been crushed by the bridge and drowned in the river were evaporated as well, nothing could withstand the heat... but in spite of that, the monstrous being that was suffering the full brunt of the attack was slowly advancing through the radiation beam as though it was nearly immune to it.
'HOW?!' Captain Atom screamed to himself in disbelief.
Right before crashing on Earth, Doomsday's last death had been at the hands of Radiant, an alien lifeform wielding powers similar to those possessed by Captain Atom. And Doomsday could not be killed twice in the same manner. It was now immune to it. At the very least, radiation could not fatally wound it anymore.
The monster's large, bony fist smashed against the superhero, breaking the radiation beam and flinging him all the way to the other side of the riverbank. Captain Atom tried to take flight once he got a hold of himself but a searing pain suddenly burst from the side of his torso - a bone spike as large as his very forearm had impaled him. Particles of radiation began to pour out of his wound in a show of yellow and blue light and Captain Atom cried out in distress.
He didn't fear for his life - for all he knew, he was nigh immortal. He hadn't found out anything that could kill him yet. But he was losing control over his powers. And once he completely lost it, an explosion not any less powerful than an atomic bomb would take place. His body would reform later on, but millions of people would be killed!
Before his suit completely destabilized, Captain Atom left an afterimage behind him as he flew high up in the air at the fastest speed he was capable of. And only a few seconds late, at over 10 miles above the city, an enormous explosion illuminated the night sky like a miniature sun.
The light and the intensity of the explosion awoke Supergirl from her state of unconsciousness and just with a look of her X-ray vision, she could see get a grasp of the situation. The pain coming from her broken leg was making her cringe and pant heavily, but the girl clenched her teeth and took flight.
'Supergirl! You can't go back there! You will die!' Black Canary shouted in distress.
But the girl didn't want to listen. Wiping the blood that had yet to dry from her mouth with the shoulder of her white shirt, she flew higher up in the air. Her normally innocent blue eyes held the resolve of steel.
'I can't let it go. It will go back after Clark! I have to stop it!'
When she just took flight, she was slow...and she flew in the opposite direction to that of where Doomsday was. But her speed quickly accelerated. Not long after, she broke the sound barrier!
'Faster!' She urged herself and her speed soon increased to a level where everything around her transformed into a blur.
'Faster!' she yelled in her mind and even despite the invisible telekinetic field that coated every Kryptonian's body, her clothes started to catch on fire.
She was flying faster than she had ever done in her entire life... in only a few seconds, she already reached the Western Coast of the North American Continent. But her speed only kept increasing! The Pacific Ocean, Russia, the European continent and then the Atlantic Ocean...she had passed by them, circling the entire planet in less than 10 seconds!
And the bone-covered creature never knew what hit it when a devastating punch collided into its stomach! The shockwave it generated broke the windows of all the skyscrapers all over Metropolis City and the entire river bank became a seemingly bottomless chasm that the rivers' water appeared to be unable to ever fill. Tens of the surrounding buildings were demolished and the impact of the shockwave was felt to tens of miles away. It was the most powerful punch Supergirl had ever thrown.
The arm with which she had punched broke from the wrist and the bones of her forearm snapped from the elbow, protruding through her flesh. She lost all her energy, all her strength, now falling into the enormous rupture in the ground that her own hit had created, her body unable to listen to her brain's commands anymore.
It was then that two powerful arms caught her from mid-air. The girl weakly opened her eyes, her hazy blue eyes unable to clearly see the face of the one who caught her in the darkness of the winter evening - the destruction caused by the fight long had long since plunged most of the Metropolis City in complete darkness from the power being cut. But once he raised his head, the moonlight illuminated his face, letting her recognize him. Her heart sank.
'Is this the end?' she asked herself and her face took on an expression of despair. 'At least Clark is safe...'
But her facial expression did not go unnoticed by the one that held her. To her great surprise, an unexpectedly gentle voice came from him:
'Don't worry. I'm not here to hurt you.'
The man let himself land on the ground and laid the blonde girl on a patch of still intact grass with great care to not upset her grievously injured arm and leg.
'What...what are you doing here?' Supergirl asked in a feeble voice.
'I came to help.'
'...Why...why did you save me?' her weak voice sounded once again.
The girl felt the man in front of her cup her cheek with his hand, gently caressing it. Despite the insane amount of pain she felt from her entire body, she still couldn't hide the shock she felt at his actions. After all, the man that caught her was one of the cruellest and violent men she had ever seen in her life.
'To think that girl like you would have that kind of resolve... You were determined to die so you could save your cousin and the others, weren't you?' the man asked, his blue eyes peering into hers.
The girl did not reply to his question but he could see it in her eyes.
'Caring about your family so much that you would be willing to die for them...You've earned my respect!' the man muttered, his hand still softly cupping her cheek. 'I will finish what you started. Now rest.'
'Wait...the monster...can't be killed 2 times in the same manner...be careful...' she barely managed to say.
'Got it. Now don't worry. Nobody else will be hurt anymore. And nothing will happen to you either. A part of me will remain here, to protect you.'
As the man's words ended, a feeling of safety washed over Supergirl. For reasons she could not explain, his sincere words touched her. Unconsciously, she leaned into the hand that was caressing her cheek and her eyes closed.
The man's eyes continued to linger on the girl's bloodied and bruised face.
'She isn't any older than my sister.'
He sighed quietly. Teenagers and, generally, most people on Earth were very different compared to those back in the Elemental Nations. In the shinobi world, everyone lived short and danger-filled lives. Many ninjas did not go past the age of 35. But that cruel life made most of the shinobi become sharp, decisive people - people that would not hesitate in the least to die for their ideals, for their creed. In comparison, most people on Earth lived relatively peaceful lives. They were not accustomed to life and death situations. Their characters were weak and complacent. Not many would have the courage and strength of character to be willing to die for their loved ones, especially not someone as young as Supergirl. That's why he was so impressed by Supergirl's conviction, a girl not older than 20 - the resolve to protect her cousin, her only remaining family, even at the cost of her life...that was something that he could relate to. Something that he could respect.
An exact replica of the man appeared next to him as he stood up.
'Take her somewhere safe. Try to mend her wounds and use the Mystical Palm Technique to stabilize her condition. Treat her as you'd treat me.'
'Yes, boss!' the clone replied and nodded seriously.
Another ten clones came into existence in a plume of smoke and immediately disappeared from his sight in a blur of speed. They knew what to do - search and rescue the survivors.
'Now then...I'll make you pay for everything you've done.'
Naruto didn't care about strangers that much. He was different compared to his past life where he had risked his life countless times for the villagers that hated and despised him. In his second life, he would only fight for the people that he loved - Misaki, Kyuubi and Galatea. And Doomsday had nearly killed his sister. He had been a breath away from losing his family once again.
'Unforgivable!'
However, even as he thought so, deep into a corner of his heart, Naruto also felt anger at how many innocents had died. Thousands of people were killed during the beast's rampage. Children, women, men, elderly...there was no distinction. They were crushed like ants.
Scene break
Naruto didn't know where to find Doomsday. He had seen it being blasted somewhere towards North-West, but he could not estimate how far it had been launched. He felt himself sigh in amazement every time he replayed in his mind the scene of Supergirl's last punch.
'I've never expected a girl like her to ever display such power!'
As he ran towards Northwest Naruto couldn't help recalling the words of the first person that had ever made a real impact on his personality in his first life:
'When a person has something precious they want to protect, that's when they can truly become strong.'
Haku was the first powerful enemy close to his age that he had encountered in his past life. The two of them had only spoken to each other for a few minutes, but in those few minutes, Haku's words influenced Naruto's life more than anyone else before. In order to protect her cousin, Supergirl surpassed her limits and the power she displayed was above anything else Naruto had ever seen in his current life.
His body surrounded by his Black Lightning Armour, Naruto kept running for more than half an hour at his fastest speed, covering hundreds of miles in the process. Maintaining that crazy pace was rapidly eating at his chakra reserves but he paid it no mind. It was imperative to find the monster before it could recover. As he ran, he kept circulating his chakra, trying to sense any particularly powerful life signatures around him but it was all for nought.
'Did Supergirl's last hit actually kill it?'
He had already crossed the border to Canada and was now at the outskirts of the Quebec city, but there was still no sign of the alien lifeform. There was also no destruction anywhere - and Naruto doubted that the beast was smart enough to lay low until it fully recovered. If it was alive, it would have definitely wreaked havoc wherever it went.
After running at his top speed for nearly 1000 km (~600 miles), he could feel that the chakra reserves in dantian almost depleted. While finding Doomsday as soon as possible was extremely important, he knew that he couldn't do it while he was exhausted. A few minutes later, he was inside one of the McDonald's branches in Quebec City, ravenously devouring one hot dog after another, making the surrounding people watch him with disgusted fascination etched on their faces. Eating was one of the best ways to replenish his energy - and his 2 chakra hearts would convert that energy into chakra in no time.
Once he finished his food and was about to leave the restaurant, a familiar voice resounded in his mind.
'Mr Uzumaki, I assume you are pursuing the alien beast?'
It was weak and the telepathic connection felt unstable, but Naruto could recognize the owner of the voice - reason for which he didn't shout 'Kai!' the very second he heard it, to throw the voice out of his mind.
'Are you the Martian Manhunter?'
'Yes, I am. But I am severely injured, I will not be able to hold the telepathic connection for too long.'
Naruto waited in silence for him to continue.
'Out satellites have localized Doomsday-'
'Doomsday?'
'That's what we call the alien monster that attacked us. He is somewhere in Hudson Bay, at the bottom of the gulf. We have reasons to think that it's still alive.'
Naruto was not that well-versed with Geography but even he knew where just a huge mass of water was - Hudson Bay was located somewhere to the North/North-Eastern side of Canada. Because of that, he was stunned speechless for a moment. The centre of Hudson Bay was somewhere around 2500 km away from Metropolis City (~1500 miles)! He had trouble wrapping his mind around 2 things:
'How can a punch throw someone to over one thousand miles away and how could the one on the receiving end possibly survive something like that?!'
He was more than a little startled. But Martian Manhunter did not comment on that. Instead, with the last of his power, he kept the telepathic connection only for a few more seconds to say:
'I hope you succeed, Uzumaki Naruto. Right now, our fate is in your hands.'
'I'm not doing this for any of you. If you're not able to stop the beast, it will eventually reach Gotham City as well. I'm doing this for my sister.'
But Martian Manhunter did not hear his voice. The telepathic connection had ended before that.
Scene break
It was the end of January and Hudson Bay was located in a region with a polar climate. At this time of the year, the entire gulf would be fully covered by a very thick sheet of ice. But at this moment, the ice on the entire Southern half of the bay was cracked in smaller pieces, courtesy to an object that crashed in there.
A large, grey and muscular arm covered in bony protrusions suddenly burst from the water and clung on the edge of the ice. The large figure of the humanoid monster crawled out of the water and laid on the floating piece of ice, seemingly drained of power. The blood coming out of its mouth stained the white ice with a murky, dark red colour. Due to how many times it had died along during the hundreds of thousands of years in his existence and the repeated evolutions it had gone through, Doomsday 'lost' a majority of the internal organs most living creatures possessed - and it was only because of that reason that it was still alive. Otherwise, Supergirl's last hit would have claimed its life.
And even if it somehow survived, it was due to sheer luck - Doomsday had been lying unconscious at the bottom of the bay, for nearly one hour.
Just as Doomsday managed to make its way out of the water and lay on top the ice, a bolt of Black Lightning suddenly slammed into its back! A maddened roar of pain came from the alien monster and the entire ice on hundreds of feet around the place where the lightning struck was evaporated, the beast sinking back into the water.
Naruto patiently waited on top of the water - he did not want to challenge the alien monster underwater. A being that defeated the entire Justice League by itself was not something that he would underestimate, even if it appeared to be injured.
'An injured, cornered beast is even more dangerous.'
His feet abruptly pushed against the surface of the water as the monster burst from below, trying to catch him off-guard. Black Lightning gathering around his fist, Naruto punched below him explosively! A deafening thunderclap-like sound boomed and the monster was thrown back into the water like a rocket, raising massive waves. It was the first lightning technique that Naruto had personally created on the prison island nearly 2 years before with Kyuubi's help, a move that could shatter 3-story sized cliffs into bits.
But only a few moments late, Doomsday burst out of the water again, roaring in rage and seemingly unaffected by the blow it had just eaten!
A blue, crystal-like bone grew through the palm of Naruto's right hand until it reached the length of a sword. Black Lightning covering his entire body and the bone sword as well, Naruto slashed downwards with both of his hands.
The sound of two metal-like objects clashing was heard when Doomsday blocked Naruto's lightning-covered bone sword with the bone protrusions coming out of his forearm. For a moment, Naruto was startled. And that very moment of surprise was enough for the beast's fighting instincts to capitalize on his flaw. Doomsday's left fist smashed against the right side of his head!
Naruto was sent skidding tens of feet across the water. Before his body's momentum ended, the beast's foot collided against him once again, sending him crashing towards the shore. Doomsday had realized that it was at a disadvantage fighting in the middle of the bay because unlike its opponent, it could not fly nor walk on water. Therefore, it decided to take the fight on the land.
'Fuck.. what kind of body is that?!'
'My black lightning seems to hurt it, but it didn't cause him any visible injuries...and those bones spikes of his could stop my bone sword!'
Ever since Naruto had created his own version of Shykotsumyaku - Kimimaro Kaguya's original bloodline limit - it had proven to be an unstoppable weapon for him. Nobody managed to ever block it, not even someone as powerful as Galatea or Superman. His version of Shykotsumyaku was the very reason why Naruto managed to get an almost unfair advantage even against someone as powerful as a Kryptonian.
However, now, for the first time in his life, his bone sword encountered something that it could not cut! Doomsday's bones were not any weaker than his!
Naruto was forced to wake up from his disbelief when the sight of the moon above his head was suddenly obscured by a mass of muscles covered in bone spikes. A crater was formed under the beast's feet but Naruto successfully dodged its attack with a lightning body flicker movement.
'Its brute strength is higher than mine, its body resistance is higher as well, and my trump cards - the black lightning and my bone weapons are ineffective against it.' Naruto analyzed the situation grimly.
'It's like the perfect killing machine.'
But at that moment, instead of becoming distressed, a strange euphoria suddenly started to course through his veins. The prospect of fighting such a disadvantageous battle excited him beyond what words could express. Just earlier that day he had been complaining about the fact that fights were no longer as satisfying for him as they used to be when he was weaker - when he was just a slightly above average human.
Unconsciously, a bloodthirsty smile stretched across his face and his eyes became slit - not fully activating his self-created doujutsu but initiating it just to give him a slightly improved reaction time. He didn't even try to reign in the laughter that burst from the very depths of his heart:
'Ahahaha! Entertain me more, beast!' he shouted and launched himself at the humanoid monster with a crazed expression on his face.
Crystal-like blue bones grew from all over his torso, elbows and shoulders. From a distance, one would be unable to clearly recognize which was the human and which was the monster amongst the two of them.
Their fists clashed against each other and Naruto was blown back by the alien's strength. But before Doomsday could capitalize on its advantage like before, out of nowhere, a clone's lightning-encased fist exploded in its back, making it sway to the front. The original Naruto's right forearm became disfigured as countless bones grew out of it like a porcupine and he met the beast with a crushing lariat to the neck!
The bones actually bypassed Doomsday's incredible defence and impaled its throat making the beast choke with its own blood as it tried to scream. But the next moment, Naruto felt one of the protruding bones from his torso crack and his body was blown back violently by a devastating blow to the gut. While the exterior bones had protected him this time around from feeling the damage of the hit directly, the leftover vibrations rattled his internal organs and he couldn't help spitting a mouthful of blood himself.
In a burst of speed, Naruto abruptly appeared in front of the beast, trying to smash his fist against its face. Doomsday, intercepted the blow but then, it suddenly found itself kneeling on the ground when 2 Shadow Clones kicked the back of its legs at the same time.
Naruto's left hand clenched into a fist too but then, he pointed his index finger in front of him and shouted:
'Hell Stab!'
It was the most powerful move in the arsenal of the Third Raikage of his past life, also known as the 'The strongest Spear'. It was the very technique that the 3rd Raikage had used to cut off all of the Eight-Tailed beast's tails and defeat it into submission.
Pitch-black lightning condensed around Naruto's left hand and he stabbed towards one of the red eyes of the beast! An inhuman scream came from its throat as Naruto's Hell Stab punctured through its eye! It gouged it out, dug into its skull and incinerated its brain until only ashes were left!
'Fucking cockroach!' Naruto swore but allowed himself to relax, thinking that he had finally managed to kill it...in his mind, nothing could survive its brain being destroyed... but how could he have known that only a few months ago, the monster had become immune to brain damage after Justice Lords' Superman lobotomised it.
Doomsday suddenly grabbed his left arm with both of his hands! The beast roared with ferocity and it viciously slammed him into the ground multiple times, like a ragdoll. When it finally let go of him, the monster straddled its body and began to rain with its fists on his face.
'Kirin!' Naruto barely gasped out under the onslaught and a massive serpent-like dragon of black lightning smashed against Doomsday's body, completely enveloping both of them.
Naruto tried to shunshin away, but seemingly ignoring the pain it felt from the lightning scorching its entire body, the beast suddenly grabbed Naruto by the left arm that he had used to gouge out one of its eyes...and PULLED!
A scream of agony burst from Naruto's throat as his left arm was completely torn apart from his shoulder!
'KAI!' Naruto roared and the almost all the chakra he had left was expelled from his body, flinging Doomsday away like a hurricane.
The beast itself was gasping for air. It had suffered too many injuries in a short period of time. Supergirl's last blow alone had nearly killed it and when he was beginning to recover, Naruto had stabbed it in the throat, gouged out one of its eyes and incinerated its brain. The second Kirin also scorched the skin and melted the bone protrusions that covered its back, letting its raw flesh be seen. Doomsday's charred and bloodied silhouette wobbled as it barely got up to its feet, its still intact red eye filled with a crazy desire to kill its enemy.
Naruto on the other side, could not take his eyes off from the arm that was laying in the crater, on the ground next to him...
'My arm...!'
After the Metamorphosis that his body underwent because of the Lightning Tribulation on the prison island, he never thought that someone would ever manage to hurt him to that extent one day. He had thought that his body's toughness and his bones' strength were unbeatable. But the creature in front of him not only cracked his ribcage, it even ripped apart one of his arms.
Tearing his eyes away, he looked at the alien lifeform in front of him. Seeing the beast struggling to lift itself up to its feet and sensing its still unquenched desire to kill, Naruto himself lost control over his own killing intent.
'Just what does it take to kill you, motherfucker!?' Naruto roared in rage, his screaming turning demonic towards the end.
A heavy pressure suddenly flooded the entire area and, being at the end of its powers as well, the beast felt its legs tremble under its own weight. A black haze made the darkness of the night even darker and moon appeared as though it was covered by a black veil, greatly dimming its light.
Naruto's tan skin turned grey and two grey bones grew from his forehead, like a demon's horns. His still intact right hand was entirely covered by a construct of bones similar to a spear and long, dragon-like bone tail grew from his spine. The sclera of his eyes turned black and grey scale-like bones grew on his chest and back. (1)
Only an after-image was left in his place and a moment later, the blonde's right arm that had turned into a bone spear fully pierced through the beast's body!
'Let's see you survive this, animal!' his demonic voice was heard and, in the next second, massive bone spikes burst from inside Doomsday's body, impaling it from within.
Foul smelling blood and gore burst from it as its entire body was turned into mincemeat by the bones that were skewering it...and they were its own bones. When Naruto's spear-arm pierced its body, he released the transformation to grab its spine and inject his chakra into it, making the beast's bones' growth go haywire. He had used the beast's own skeleton to kill it.
The light in the alien's sole remaining eye disappeared. Doomsday was dead.