AN: So it begins, the madness know as the USJ arc has begun.

Thank you, Sona for beta testing this fic.


"Aizawa Sensei, what's going on?"

"Villains," Aizawa replied, 'Shit I never expected them to attack so soon. But as long as that demon is fighting them then we have a chance to escape.'

"Thirteen let us take the students and leave before the villains get to us," Aizawa said.

"What about Senshi? We can't just leave him there," Thirteen asked.

"He can handle himself, that's why we invited him in the first place. All we need to do is get the students out of here and contact our allies. Senshi will most likely take most of them," Aizawa said, "We're wasting time, let's go." Eraserhead then led his students and his fellow coworker out of the USJ.

Unfortunately, someone stopped them.

"Leaving so soon," a distorted voice said. A dark mist formed in front of the students, "We just started."

Aizawa instantly used his eyes, but they had no effect on the mist.

"That doesn't work on him," a voice behind the mist said. He then appeared to the students and teachers. He was a Ninja with an Oni Mask, "Call me Se- no you can't know my real name. How about Oni, call me Oni."

Aizawa and Thirteen put on their stances. Aizawa did so by grabbing his scarf and Thirteen by popping open one of her finger holes.

"Hey, look if you just tell us where All Might is we won't do a thing," Oni said, "Villains honor."

"Bullshit," Aizawa said, "What villains attack a school and say they have honor?"

"Wiseass are you, fine. Kurogiri, do your thing," Oni said.

BOOM

POW

Bakugo and Kirishima rushed and both attacked the mist man at the same time. "Sorry Dusty Ass, we ain't going to be victims of your attack."

"No, stay back," Thirteen said.

"Too late," Kurogiri then surrounded the class and teachers in his mist.

"Everyone stay toge-" Aizawa's voice suddenly disappeared.

"Aizawa Sen-" Izuku's voice also disappeared.

Soon more and more people started to disappear.


"Shit, who the hell is this guy?" One villain asked. Senshi had already taken down nearly half of the villains with ease.

"Really, no one knows. I disappear for a few years and everyone forgets me," Shinu Senshi said. One villain came charging from right behind Senshi, only to be met with the large man's elbow to the face. "Seriously this is a low blow even for me."

Senshi then felt something touch his back and responded by throwing a powerful chop towards the neck.

Only to realize that it was his coworker Aizawa, who had a confused look on his face. "Aizawa, what the hell are you doing here? Shouldn't you be with the kids?" Senshi asked.

Aizawa looked around, "Wait what happened?"

"Sorry, that was my quirk," the mist man appeared a few feet away from the duo, "We can't have anyone escaping just yet. We want to leave All Might a present for his absence."

"You guys must be stupid for wanting to take on All Might. Not even i'm that dumb," Senshi said.

"Crazy, yes. Stupid, No," Oni said, he took out a samurai sword and was placing it on his shoulder, "But then again, we are challenging the number one hero and the King of Fighting."

The group of villains was shocked by their leader's words. "He's the King. No fucking way!"

"I thought he was dead, the Devil Lance killed him."

"We need to leave right now."

"RELAX, come on don't you think that we planned in case something like this happened?" Oni said. From the tone of his voice, he was sounding extremely cocky.

"Senshi, do you have any idea on what they are talking about? Aizawa asked. His voice was silent and curious as to not gain the attention of the villains

"No, but from the sound of it isn't good," Senshi replied.

"OHHHHHH NOMU," Oni yelled like a child calling out a pet.

Both Aizawa and Senshi felt something appear behind them. Something monstrous and not of this world.

Turning around, they saw a monster from the depths of hell before them.

"KILL," Oni said.

"RAW."


SOMEWHERE ELSE:

"So any idea as to where we are?" Kirishima asked.

"From my guess, the Collapsed Zone," Midoriya replied.

"Great, just what we needed. Separation from our friends when something bad is happening," Bakugo said, "Well at least we're not alone." The trio was currently in a room with broken windows and opened doors.

"You're right," a group of villains came out of the exposed doors, "You're not alone."

"Me and my fucking mouth," Bakugo said.


IN ANOTHER ZONE:

'SHIT SHIT SHIT,' Ojiro jumped from Street light to Street light, avoiding not only the villains chasing him but the fires as well. 'Of course, I was left alone with only villains to accompany me.'

"Hey what's the matter, kid. Aren't you U.A kids supposed to be the top hero material. So why are you running?" One villain said, mocking Ojiro.

'Oh shut it,' eventually, Ojiro found himself cornered by the villains.

"WHAT NOW BRAT?" One villain said.

"Oi, bitch," one villain turned around and was met with a massive fist to the face.

BOOM

The villain was sent flying to the nearest wall. "So, you dared hurt one of my classmates. Well, good thing I'm here," Takeshi cracked his knuckles, "Cause I'm not locked in here with you, YOUR LOCK IN HERE WITH ME."


FLOOD ZONE:

"Come on out, little girls. We won't hurt," a shark villain said, "Especially not that frog girl."

"What a pervert," Toga said. She, Ochako and Tsuyu were currently stuck in the ship on the flood zone. They were surrounded by villains and had no way to escape.

"Asui, I'm scared," Ochako said as she hugged her frog friend.

"Me too," Tsuyu replied.

"Calm down, our teachers are most likely rushing to our rescue," Toga said, "We just have to stay here and not do anything crazy."

THOOM

The ship was sliced into pieces by one villain's quirk. "I'm tired of waiting, let's just get them now," the villain said.

"The ship's sinking!" Tsuyu yelled.

"What do we do? What do we do?" Ochako asked.

Toga had an idea but it was not only crazy but stupid. "Tsuyu," Toga took out her syringe, "I need your blood."

"Why?"

"Just trust me," Toga said. Time was running out and the ship was sinking fast. Tsuyu gave her trust to her classmate and gave her arm. Toga inserted her syringe into Tsuyu's arm and took out some of her blood. "Thank you," Toga said.

She then drank Tsuyu's blood much to the disgust of the two girls. "You two get out of here. Tsuyu the moment the villains come after me, grab me and run okay."

"But-"

"JUST DO IT!" Toga yelled as she jumped straight into the water. However, right before she hit the water, she was covered in a grey ooze and right before she hit the water she transformed into Tsuyu Asui. Her entire hero costume and all.

"There's the frog girl, GET HER," the villains all rushed after her.

"HIMIKO," Ochako yelled.

However, Tsuyu grabbed her brown-haired friend and jumped off the boat. As the villains rushed after the disguised Toga, Tsuyu immediately sent out her tongue and wrapped it around her fake self. Right before all the villains could attack her, she was yanked up into the air by Tsuyu.

"That was pretty crazy if I do say so," Tsuyu said, "But the hard part has only just begun."

The moment she said that the villains noticed the trap that was laid for them. "GET THEM," all the water villains rushed after the U.A girls, determined to get their revenge for their trickery.


COLLAPSED ZONE:

"Wow, I can't believe these guys were so weak," Bakugo said as he kicked an unconscious villain.

"Still, it's a surprise that there were so many of them," Midoriya looked out the window, making sure they were clear.

"Come on guys we need to get out of here," Kirishima said.

"Not so fast," a voice with a Spanish accent said. Midoriya and Bakugo raised their guards and went on high alert. Kirishima noticed his friend's reaction and hardened his body while also raising his guard.

"Wow, you guys are no joke. You took out the weaklings, but can you handle a true threat?"

"THE BULL KILLER" DONQUIXOTE GUERRERO

"Sorry kids, you would have made it far into this world. But you had to meet me," Guerrero said. Unlike his companions, Guerrero was wearing normal plain clothes. "Or you could surrender, that way I don't have to hurt any kids."

Guerrero started to make motions with his fingers, he was eager for a fight. He would have an easy win, after all, none of these kids know about his quirk and he seems there's.

"Guys stay back. His quirk allows him to turn his fingers into knives, " Izuku quickly said.

'Shit, how the hell does this kid know about my quirk,' Guerrero said in his head, 'No matter I just need to take them out.'

Guerrero was the first to act. He transformed his right fingers into knives and moved instantly, trying to act Izuku but failed. Kirishima stepped in and stopped his attack with his hardening. The knives couldn't cut through Kirishima's arm so he was saved from harm.

Bakugo instantly responded by jump kicking Guerrero right in the face, which caused the Hispanic man to fall to the ground.

Midoriya then kicked Guerrero in the face, which caused him to fall on his back. Bakugo brought his hand down, but before any attack could happen, Guerrero dodged leaving a cut on Bakugo's arm.

"Shit," Bakugo pulled his arm back, trying his best to cover the wound.

'God damn these kids are tougher than I thought,' Guerrero thought in his head, 'I have no choice, I have to go ALL OUT.' Both of Guerrero's hands turned into knives and ran at the trio. Kirishima put both of his arms up and dashed straight towards Guerrero.

Instead of a slash, Guerrero threw a right kick towards Kirishima's hips. Unfortunately, Krishima's hardening made the attack effortless. Yet, Guerrero continued his assault with a flurry of powerful punches.

'You're a tough kid, but everyone has a limit,' Guerrero thought as he attacked Kirishima. Fortunately for the redhead, he had friends on his side.

Bakugo placed his palm on Guerrero's face.

BOOM

Guerrero was thrown back by the explosion, however, he gave Bakugo a large cut with one of his fingers.

As Guerrero stepped back, he noticed something odd. 'Wait where's Izuku Midoriya?'

He got his answer when he saw green lighting appear underneath him. Midoriya was in a crouching position, with his arm surrendered by One for all. 'Oh shit.'

KABOOM

Izuku unleashed a massive right uppercut towards Guerrero's jaw. It was so powerful it sent the older and heavier man up to the ceiling. His head was stuck with his body hanging out like a cartoon character.

'My punch was that strong! I was only using 10%,' Izuku thought. 'But still,' he placed his left hand on his right arm, 'The pain is insane, I guess I should raise it a little more until my body can handle it.'

"OI DEKU, next time don't let us do all the damn work," Bakugo shouted, "We were lucky that guy was weak as fuck."

"Hey, at least we won," Kirishima said, "But more importantly, Bakugo how are your wounds?"

"I'm good, that guy didn't cut too deep," Bakugo then ripped off a piece of his uniform and wrapped it around his wounds.

"There's also another matter," Izuku said, "While he may be weak, the other villains are most stronger and could most likely kill us easily if we're not careful."

"There's also the mist guy who can teleport us away in an instant. If I'm honest then I think we need to take him out first," Bakugo said.

"Why do you say that Bakugo?"

"Simple, he's the reason the villains got in here in the first place. So it's possible that he's their way out. If we take him out then the villains are left here until the other teacher's come," Bakugo explained.

"That's not a bad idea, but you two attacked him before to no avail. What's going to make this encounter any different?" Izuku asked.

"One simple reason, we attacked the wrong spot," Bakugo said. Both Midoriya and Kirishima turned his head in confusion. "Look, if that guy was all mist, then why does he wear clothes?" That's when it hit the two.

"Ohhh, so we just need to attack in the right place," Kirishima said.

"Not really, if we can pin down then that would be good enough," Bakugo explained.

"Wow, you're surprisingly smart," Kirishima said.

"WHAT DO YOU MEAN SURPRISINGLY?" Bakugo then gave Kirishima The finger.


FLOOD ZONE:

Ochako, Tsuyu, and Toga were finally able to escape the Flood Zone and got on land. However, Ochako looked out of breath, as if she ran a 10K.

"Ochako, what's wrong?" Toga asked.

"Uraraka used her quirk on me so we could stay afloat," Tsuyu said.

"huff, I'm fine, huff," Ochako could barely talk let alone move.

"Well this is a good sight," an evil voice said. The villains came out of the water, ready to hurt the girls. "What are you going to do now brats."

BAM

The answer was met when the villains were taken out when a massive beast was through right at them. The black creature had crushed them completely, making them all unconscious.

"Damn beast, what the hell are they feeding you?" the voice of Shinu Senshi said.

"Your, huff Deku's Sensei," Ochako said.

"Call me Senshi, you girls get back up there. It's safer now," Senshi said.

"What about the villains?" Tsuyu asked.

"Don't worry, he's taking care of them," Senshi pointed to his ally Aizawa.

Despite being outnumbered and outgunned, Aizawa was defeating villains left and right. For instance, he enwrapped multiple villains at once and sent them flying into the air before they came crashing down onto the Earth.

FLYING LOTUS

"See he's good," Senshi said.

However, as he said that the villain he had previously thrown got back up. And it was pissed.

"RAAAAAAAHHHHH," the black beast yelled.

'Shit, I thought that thing was knocked out. Looks like it's stronger than I thought.' "You girls get out of here," Senshi then grabbed his arm and was about to take something off.

"But-"

"I SAID GO," Senshi yelled. The girls quickly obeyed and grabbed Ochako to safety. "Good, now it's just you and me you beast."

The Nomu grunted, before standing tall and firm. However, that was before a small object was thrown at Mach speeds towards its chest. The attack sent the Nomu backward a few feet. Then another object was thrown, making the Nomu collapsed to its knees.

"Hey, that was just One-ton weights," Senshi threw the fourth one into the water next to him, "But don't worry, my fists weigh TEN TONS."

KABOOM

Senshi threw a massive right punch at the Nomu, which sent the beast flying away.

Despite seeing how much trouble the Nomu was in, Shigaraki smiled to himself. 'It's all going to plan.'


Aizawa punched a villain right in the face as he collapsed to the ground. "Now there's only one match left," Aizawa said as he turned his attention to the Ninja, "You damn Ninja I'm going to make you regret the day you stepped into U.A"

"Very good, though I have to say I'm not a Ninja. Even though my clothes don't show it, I'm more of a Samurai," Oni said. He then took out both of his swords, "And let me show my power."

Aizawa unleashed his threads onto the Samurai, however instead of backing away like most opponents, Oni went towards Aizawa at full speed. Aizawa was quickly surprised by Oni's actions but soon accepted it.

Aizawa's bands moved like serpents and tried to wrap themselves around Oni. However, at the last second, Oni used his swords and cut the bands with ease. "Nice try, but my swords are top quality. You can try all you want but my swords can cut through anything," Oni said.

"You idiot, I'm more than a one-trick pony," Aizawa then took on a stance. His left elbow was raised high above his head and his right fist was placed right next to his body.

"Oh, I've never seen that stance before. Sorry Old man, you got me excited," Senshi made an X with his swords before beginning his attack on Eraserhead.

The fight only lasted a few seconds but the winner was clear.

"Aizawa Sensei we need-" Tsuyu stopped her words upon seeing what her teacher had become.

Aizawa was slashed all over, the biggest slash being on his back. The smaller ones however littered his body like an insect. Only his top part was damaged, but that did not mean they were any less futile. Aizawa's body collapsed to the ground, unable to handle all his damage.

"Looks like he wasn't able to keep up with my speed. Then again I move faster than most humans can see," Oni said. To humiliate his opponent, even more, the Samurai sat down on his body like a chair. "Oh hello, little ladies would you like to entertain me even more."

"Tsuyu run," Toga said.

"I can't-"

"RUN," Toga shouted. The frog girl listened and carried the exhausted body of Ochako by herself.

"So you plan to take me all by yourself," Oni said, "Even though your much more experienced teacher couldn't defeat me. Cool."

Toga took out her syringe, despite her body shaking, her hand was firm and proud.

Oni smiled under his mask, "Well, I'm going to have some fun."


EDGE OF THE COLLAPSED ZONE:

"Well looks like we're out," Kirishima said as they left the collapsed zone.

"We need to be careful, who knows what could happen?" Bakugo said.

"Yeah but-" something got Midoriya's attention, something wrong? He immediately ran towards it, despite Bakugo's and Kirishima's words. He ran full speed at the scene and the moment he got there, he couldn't believe what he was seeing.

"Oh your not supposed to be here," Oni said, his fists were covered in blood. Next to him was a beaten Toga, bleeding and bruising on the face, "Oh her, she was weak. Not as weak as you quirkless nobody but still weak. I didn't even need to use my swords on her." Izuku ignored all his talking and walked right past the Samurai, "Hey are you listening to me?"

Izuku cradled the broken body of Toga Himiko. "Izuku, is that you?" Toga asked with a weak voice.

"Yes, it's me," Izuku held Toga tight.

"Thank you," Toga said before passing out.

"Toga, TOGA!" Midoriya tried to wake up his friend, but it was all for not.

"See, I told you she was weak. As weak as you," Oni was about to take Midoriya's life when something happened.

The ground around Midoriya started to crack, green lighting surrounded his entire body, and a dark aura was forming around himself. "I'm going to kill you," Izuku said.


BOOM BOOM KABOOM

Wave after wave of attacks, yet Senshi's blows did nothing against the mighty beast. 'I don't understand. I've thrown countless attacks on this thing yet happens. I knew it was a monster but this is getting out of hand,' Senshi was thinking.

The Nomu charged at Senshi, trying to throw a massive punch at the black-haired man. Senshi dodged and responded by Judo flipping the beast making it land right on its face. Once it was on the ground, Senshi threw a massive kick at its face.

The Nomu was sent flying, and it soon crashed onto the earth. Despite the powerful attacks, the Nomu got right back up; with no sign of damage. The Nomu charged at Senshi at extreme speeds and with one right punch was able to send Senshi to his knees.

The Nomu then raised both of its arms, ready to destroy the King of Fighting with one massive blow.

SLASH

The Nomu's chest had three massive slash wounds on it.

Quirk: Evolution, Wielder: Shinu Senshi

"Good job beast, you made me go all out," it said. Shinu Senshi got up, his pupils were gone and a massive grin was on his face. Despite having the same body, it was clear that someone else was in control.

Before Shinu Senshi was the King of Fighting, he had another epithet: DEMON LORD


AN: Izuku Midoriya vs the Mighty Invincible Samurai ONI

And

The King of Fighting vs The Symbol of Evil

Who will win, Martial Arts or VIOLENCE?

FIGHT