Hey I decided to rewrite some of this story because I realized that some elements didn't quite work. So I've worked tirelessly to change the things I didn't like, and also fix some hiccups that escaped my notice as I was working on this originally. Plus I've made the battle far more entertaining overall while changing a few details that I realized in hindsight might anger some MHA fans.
All right this is a My Hero Academia/Godzilla crossover that takes place during Allmight's battle with All for One. The oc Kano has a quirk called Ancient's Blood, this power allows Kano to tap into Gojira's power. This puts Kano close to the same level as Allmight, and All for One. Though only All for One knows this as while Kano is neutral, the villains have tried recruiting him. They only got a negative response as Kano doesn't care about the daily struggles between heroes and villains.
Though All for One won't be expecting resistance from him, as for what Kano looks like he's covered in charcoal scales with bone white spikes sticking out of his back, and a tail as when his quirk first activated it changed his physical appearance, though he still has hair. His eyes are a blazing orange, while his pupils are reptilian in nature with a slit pupil, and he wears a black shirt that accommodates his spikes and navy blue jeans with a slit for his tail along with black combat boots.
His quirk allows him to tap into nuclear energy like Godzilla can, this trait allows him to use the Atomic Breath and Nuclear Pulse, but also allows Kano to use his energy to heal others. Though his healing ability is minor in comparison to characters with healing abilities, however his quirk gives him a healing factor on top on increasing his abilities to superhuman levels. Okay enough rambling here we go!
Mt. Fuji foothills, residence of Kano Dai
Kano was rather bored at the moment, but as always the Saurian decided to just watch the news. Only to see the number one hero All-might getting his ass kicked by a familiar villain. Upon seeing All for One battling All-might Kano recalled how the villain had come to his home in the mountains wanting to recruit him. Though not knowing what exactly he wanted at first All for One made his intentions clear when Kano asked what he wanted. At his proclamation of completely exterminating the hero community with his help Kano simply said," Get the hell out of my house. I don't give a damn about your so called war with the heroes. However if push comes to shove I'll back the heroes".
After that Kano had heard nothing for several months from the league of villains, and had thought All for One had left it behind. Apparently he was wrong so Kano decided to fix his mistake by putting All for One down. As he walked out of his house Kano stretched his legs and focused his senses, allowing him to pinpoint the exact location of the battle, and took off sprinting so quickly that he created a sonic boom. Kano knew All-might was running out of time, and decided to move faster than he ever had before, and was already on the outskirts of the city the battle was taking place in.
Deciding to forgo stealth Kano leaped onto a building, making his way to the battlefield in time to see a female hero, whose quirk seemed to be size alteration fall to the ground. Though Kano decided to interrupt the battle by jumping between Allmight and All for One with a furious roar. Catching both warriors off guard, when the dust cleared Allmight seemed confused at his sudden appearance, while All for One was shocked.
The other heroes and villains were confused while Kano was smirking darkly at All for One, and growled," It's been awhile All for One, I've always been a man of my word. Apparently you think I won't kill you. However I am nothing like these people. I fight to protect the balance of this world. If that means I have to kill you to keep it I will".
After his speech All-might asked," Who the hell are you? You need to get out of here before he kills you", at his warning Kano turned to face him and growled," Tch, I'm not surprised that Nana Shimura didn't say anything about me. Let's just say I'm an old friend of your masters'. Just stay out of my way and you'll live to see tomorrow".
At his dismissal Allmight growled before being stopped by Gran Torino who said," Trust me Toshinori he's more than strong enough to beat him", at his warning Allmight frowned before nodding. At his foes decision All for One goaded Allmight saying," Are you finished already Allmight? A pity I was wanting to test my full power against you", at his attempt Kano said," Enough of this prattle All for One I've come to kill you and restore balance to the world".
At his threat All for One tilted his head in confusion before saying," Do you really think you have the power to beat me? I've amassed a multitude of quirks using All for Ones special ability to steal quirks and add them to my arsenal. What could you possibly do against me Kano?". At his question Kano roared with laughter before saying," You've never seen a quirk like mine All for One. I'll make sure you suffer for what you've done".
At his proclamation All for One activated his quirk, his arms changing mass while Kano's spikes started glowing with an azure light. Then Kano released a beam of azure plasma from his mouth that streaked towards All for One and glanced off a shield that he had erected at the last moment. Though All for One was stunned by the attack long enough for Kano to get in close and start tearing into All for One's suit with his claws. However All for One countered by launching a gust of wind that sent Kano sliding back a few feet as the villain recovered from his assault.
As he returned to his feet All for One said," Quite impressive I wasn't expecting you to have this much power", at his quip Kano said," I'm just getting warmed up". As he said that Kano felt his energy pool in the base of his throat until All for One suddenly asked," Do you know what happened to Nana Shimura?", at his question Kano simply growled," All I heard was that she was killed during a villain attack some years ago. Wait did you?!".
As he spoke Kano could feel his rage growing by the second until All for One said," Yes it was I who killed that pathetic excuse of a hero". At his response Kano saw red and charged All for One, spikes glowing a malevolent blue. Suddenly Kano stopped when someone grabbed his tail. Upon seeing who had grabbed Kano All for One shouted," TOMURA RETREAT! HE'S TOO STRONG FOR YOU TO DEFEAT!".
Tomura seemed shocked that his teacher was telling him to retreat made him falter enough that Kano managed to knock him away with a swift strike with his tail. Fortunately for the teen Kano was far more focused on All for One, but Kano paused upon catching the concerned tone his voice giving the unconscious form of Tomura.
Unfortunately for All for One Kano took advantage of his pause and charged the villain, raining punches and claws at the villain. All for One staggered momentarily before lashing out with a backhand that sent Kano skidding backwards. Though Kano had blocked the attack it gave All for One time to lash out with several tendrils that wrapped around his arms and legs.
Knowing what was coming next Kano released a pulse of energy that severed the tendrils holding him still. This bought him some breathing room and allowing the Saurian to say in a mocking tone," What's wrong All for One, you getting tired?". His jest earned Kano a punch to the gut sending him reeling for a moment before recovering. As he focused on his opponent Kano felt a hand grabbing his left hand, and when he whirled around Kano saw Tomura smiling sadistically.
Feeling a burning sensation in his hand Kano knocked the teen away with another swing of his tail. Looking at his hand Kano saw that the flesh was decayed and almost pitch black. After a few moments his hand turned to dust, leaving a stump making him growl slightly before he frowned in concentration. This caught All for One's attention as Kano suddenly regrew his hand in the span of a few moments.
Turning his burning gaze upon All for One Kano growled," You know something funny All for One? I was gonna let that brat live, but now I'm gonna kill him". As he spoke Kano moved his focus onto All for One's apprentice, making both villains blood run cold. After taking a moment Kano suddenly charged Tomura, spikes glowing menacingly before he was intercepted by All for One who growled," Your fight is with me Kano don't forget that!". Tomura took advantage of Kano's shifting focus to attempt another disintegration, unfortunately for the blue haired teen Kano was prepared and wrapped his tail around the extended arm. The teen struggled for a few moments before Kano threw him aside and into a building a few meters away.
After he had tossed Shigaraki away Kano threw a punch at All for One's chest. Said punch was charged with the same energy he had used in his breath attack, fist glowing a familiar shade of blue. This attack made All for One cough up some blood into his mask, after taking a moment to recover the villain realized that Kano was charging his attacks with some kind of radiation.
Realizing that Tomura was in greater danger as the boy lacked any healing quirks that could counteract the radiation that Kano was emitting in his attacks. Though Kano had once again rounded on him, moving into striking range, only for All for One to shout," Tomura you must leave immediately. You must continue what I started!".
Though as he spoke All for One noticed Kano moving behind Tomura. The villain could only watch as Kano knocked the bluenette towards a pile of rubble. And before All for One could stop him Kano had launched another beam of azure plasma at Tomura, catching the young villain in the shoulder. The blow tore off his left arm at said shouler before a black mist suddenly appeared in front of him, shielding the injured Shigaraki from the viscous attack.
The new villain didn't speak rather he simply grabbed the injured Tomura and left through a portal. All the while Shigaraki roared in rage and agony, this made Kano turn his orange eyed glare onto All for One. After both Tomura and the mist villain were gone he growled," Well he won't live for much longer, but know that his death will be extraordinarily painful".
As he spoke Kano noticed that All for One tensed making him chuckle saying," I know that his only quirk was disintegration, so the radiation that my attacks generate will kill him in the next week or so". At his statement All for One growled saying," Then you have ended the line of Nana Shimura personally", his words made Kano pause before he continued," Tomura is the grandson of Nana Shimura".
The Saurian stayed silent making All for One wonder if Kano had heard him. Only for the Saurian to let out a roar of anguish and rage, the sound shook the earth beneath his feet before Kano charged All for One. As he rushed All for One Kano was charging an energy attack in his throat, spikes glowing a familiar menacing blue. Though the villain noticed that there were bolts of blue energy lancing off his spikes.
As he advanced All for One heard Kano roared as he launched another breath attack, and like the first time he deflected it. However All for One noted that his shield was slowly cracking from the extreme heat and energy rather than completely diverting it. After a few moments Kano ceased his attack and charged All for One, but the villain saw something that worried him. Kano was starting to glow a familiar blue, but All for One spotted sparks of blood red energy lancing from his spikes.
These sparks only lasted for a few moments before Kano was suddenly wreathed in a crimson light. When the dust surrounding Kano blew away All for One felt a pit form in his stomach when he saw his opponent. Kano was standing silently, but his spikes were glowing a blood red instead of the familiar blue. Though All for One realized his opponent was done playing around.
Then Kano launched a beam of blood red plasma at All for One, and the villain thinking he could block it readied his crystalline shield, only for the beam of red plasma to punch through his shield like it was glass. Fortunately for All for One he was able to dodge the beam itself, but was still burned slightly because of the intense heat that the plasma gave off. When said beam hit an abandoned building it was obliterated in a violent explosion, making All for One realise that if he hadn't dodged he would be very dead.
Unfortunately for him Kano closed the distance between them and started throwing punches wreathed in the same crimson energy as the beam. Realizing that if Kano landed a single blow the battle would end All for One released another burst of energy sending Kano flying back.
After he recovered Kano was met with a viscous assault by All for One, however Kano released a pulse of energy that sent All for One flying into a wall. As he returned to his feet Kano smirked saying," Hehehe, this has been exciting however I cannot waste anymore time with you All for One. I've got things I need to do". All for One was absolutely livid as he was being tossed around by a rag doll by some nobody with an unknown quirk, only for Kano to roar," ALL FOR ONE I'M FINISHING THIS RIGHT NOW!", as he spoke Kano's spikes glowed with crimson light.
All for One readied an attack as Kano ran at him, spikes glowing with a blood red light, and threw a punch that All for One countered by morphing his right hand into a blade, said blade cut off Kano's arm at the elbow, Before stabbing Kano in the stomach with the blade, making the Saurian cough up some blood whilst the crimson energy grew more violent and started spreading to the rest of his body.
The sudden spread of crimson energy made All for One concerned, and even more so when Kano enveloped him in a bear hug as he roared," YOU FELL INTO MY TRAP ALL FOR ONE! NOW DIE YOU BASTARD!".
As Kano spoke the energy grew more intense until finally there was a massive explosion that shook the entire city. Even some buildings fell from the shockwave, and when the shockwave had passed those who remained saw the massive crater that had been created by the explosion. All-might walked into the crater finding Kano kneeling over the corpse of All for One, at least what was left of him, that being his mask and even that was partially melted.
All-might asked," Why did you kill him?", at his question Kano said," Seriously? If I didn't kill him he'd do this all over again. Use your brain Toshinori some people can't be helped". At his reasoning All-might growled but before he could retort Gran Torino walked up and said," Thanks for the assist Kano, but I do have to ask where have you been?", only for Kano to say," Up in the foothills of Mt. Fuji where Nana set me up after our scuffle a few decades back. I'll tell you about it later Gran Torino, here's my address so you can find me".
Alright this was fun to write if you guys want more post a review and the like.