{3rd Person POV}
In the Kamino Ward, before All Might and other heroes raided the hideouts of the League of Villains, Yaoyorozu was leading Kirishima, Todoroki, Iida and Midoriya towards the place where the tracker planted by her was situated.
Turning the corner, Yaoyorozu stopped and looked at the building, she said "This is the spot the receiver is showing."
"So that's their hideout. It really looks like one." Kirishima said.
"I don't know if it's their hideout or not, but from what I can see on the receiver, the villain has not left here for the past day." Turning towards her companions, she continued "Also, just because that villain is here does not mean Bakugo is. We are here with very little to go on. Please think about that objectively."
"We don't have anyone who excels at sneaking around, like Jiro or Hagakure, with us. If I think it's even the least bit dangerous, I will stop you immediately. Because I am your friend, I will not hesitate to call the police, either." Iida told the four of them.
"Thanks, Iida." Midoriya said as he turned his head away from Iida. "What can we do with what we have?"
Midoriya then started muttering, thinking about a plan that they could use. Todoroki took out his phone and shared his location to Saiba while thinking 'If he's also here, then things would be easier.'
The five of them then started to snoop around the hideout for a couple of minutes, and gathered near a vending machine.
"There's no reaction even though we've gotten this close."Yaoyorozu said.
"The lights aren't on, either. It doesn't look like anyone's in there." Kirishima said after observing the hideout one more time.
"To hide a tree, use the forest. I guess they're hiding it as an abandoned warehouse." Todoroki said.
Right then, two passing dunkards made comments on Yaoyorozu, calling her hostess and all. Iida tried to direct their attention to something else. After moving away from there, they stayed behind a building.
"There aren't many people walking by, but there are some." Todoroki said.
"We can't do anything to stand out. What should we do?" Yaoyorozu asked.
"Let's try going around to the back. No matter how little information we have on this place, it's all we've got." Midoriya suggested.
Agreeing with him, the five of them moved around and went to the back of the warehouse while passing through a cramped space between two walls.
"This is very narrow... I feel like I will get stuck." Yaoyorozu said.
"We can't move until we know for sure it's safe. No one will see us here, and at that height, we should be able to see inside, too!" Midoriya said as he looked at the window of the building.
"Will we be able to see anything in this darkness?" Todoroki asked.
"I can make a night vision scope." Yaoyorozu said.
"Wait, Yaoyorozu. Actually, I brought one with me." Kirishima said as he took out the night vision scope.
"Wow, why?" Midoriya asked Kirishima.
"When I thought about what we'd have to do, I thought we'd need it." Kirishima replied.
"But isn't that super expensive?" Midoriya asked.
"Who cares how much they cost? Stop talking about it!" Kirishima said.
"Then Midoriya and Kirishima, you two look through it. Iida and I will carry you on our shoulders." Todoroki said.
Midoriya and Kirishima did as Todoroki told them and Kirishima looked inside the warehouse with the night vision scope.
"It's just dirty.. I don't really see anything...." Krishima said as he looked inside.
As he looked to the backside, his eyes went wide and he got scared.
Seeing that Todoroki asked "What's wrong? What can you see, Kirishima?"
Keeping his eyes down and shivering with fear, Kirishima gave the night vision scope to Midoriya while saying "In the back on the left! Midoriya, look in the back on the left!"
Hurriedly taking the night vision scope, Midoriya looked where Kirishima pointed out.
Seeing Nomus submerged inside tanks at the back, made his eyes go wide in the implication of this location.
Just then, a sound was heard. So Kirishima looked towards the source and saw a pick up truck being lifted into the air by feet.
"Hey!" Kirishima warned his classmates.
The heroes who came to the location using the device given by Yaoyorozu had started to take action.
Mt. Lady was the one who took the pick up truck with her feet and she stomped on the warehouse as hard as she could.
That resulted in the destruction of the warehouse.
Which resulted in the five of them to lose balance and fall on the ground.
"Wh-What happened?" Iida asked.
Kirishima and Yaoyorozu got on the shoulders of Midoriya and Todoroki respectively to observe the situation.
Seeing the top heroes restraining the Nomus, they breathed a sigh of relief and got down after hearing the conversation between the Pro Heroes.
"The heroes were already moving way before we were! Now, let us fall back immediately. There's nothing left for us to do now." Iida said.
"Since she said "with All Might," does that mean Kacchan is there, too?" Midoriya asked.
"If All Might is there, then there's even more reason to rest easy. Now hurry, let's leave." Yaoyorozu said as she started to move and escape from there.
As they followed her, Midoriya stopped and he sensed something.
And as if on cue, an air blast destroyed the building and made the Pro Heroes lose their consciousness.
The five of them stood there frozen due the immense fear they felt towards the one who destroyed the buildings and the Pro Heroes in one move as his spirit gave them the illusion of their instant death.
As they were frozen in their position, they heard a new familiar voice that they all recognized as Bakugo. They looked over to their friend and following him the league of villain members appeared one by one.
When they were thinking of a way to escape from the place safely with Bakugo along with them, they heard the man speak again "You're here, after all, aren't you?"
Which made them think that All For One founded them. But to their relief, All Might arrived and punched All For One, which created a shockwave that blasted away all the members of the league of villains some distance away from All For One and All Might.
As the dust started to settle down, All For One started to speak "You're pretty late. It's a little more---"
"Yeah, I wanted to change the wardrobe you see." An unknown voice was heard, which stopped everyone on their tracks.
Even All For One looked confused after hearing the voice. Looking in the direction of the voice, all of them saw a man in a red and black outfit.
Hearing all that, the five students of U.A. High looked at each other and thought the same thing 'Who the hell is this now?'
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"Lightsbers for the win~~~" Deadpool said out loud as he spun the swords in his hand.
All For One, who saw blood coming out of Shigaraki, launched himself towards Deadpool.
Sensing the approach, Deadpool looked at All For One, and before he could reach Deadpool All Might blocked All For One.
Deadpool tilted his head and said in a sing song voice "Scary~~"
Then he moved towards Shigaraki in a blink of an eye and placed his hand over Shigaraki. Everyone thought that Deadpool was going to attack him, but only a green barrier formed over Shigaraki.
Removing his hand from Shigaraki, Deadpool told All Might "Hey All Might! Go all out with All For One, I'll take care of the dregs!"
With that said, Deadpool sped towards the other villains and one taped them before they could register what happened. Looking at Bakugo, Deadpool said "Hey buddy! Your friends are behind that wall, go with them will ya?"
"Who the hell are you to order me around? And what friends?" Bakugo yelled at Deadpool and used his quirk on Deadpool.
Dodging the barrage of explosions from Bakugo, Deadpool looked towards the readers, and said "This is why I hate teenagers. They're full of energy."
"Who the hell are you talking to?" Bakugo asked as he tried to explode Deadpool's face.
"No one." Saying that, Deadpool one tapped Bakugo and picking him up he moved towards the five students from U.A.
Looking at them and pointing at All Might and All For One who were fighting each other Deadpool said "Take him out of here kids~~
This place is going to be messy~~"
They nodded at him in agreement, because rescuing Bakugo was their mission and nothing else.
"Ah..." Making some sound, Shigaraki got up from his position and looked at his chest and placed his hand over there and thought 'I feel immense pain, but why is there no injury on me?'
Seeing Shigaraki standing up from a fatal injury confused All For One and All Might used that window of opportunity to punch him. But it was again blocked by All For One.
Deadpool who was with the six students told them "Alright, you guys get going"
Then turning around towards Shigaraki, Deadpool increased the intensity of the energy from his sword and saying "Maximum effort!" Disappeared from the spot and appeared before Shigaraki and with a swift and precise swing of his lightsabers Deadpool sliced the right hand of Shigaraki.
"GHAAAAAAA!!!!" A blood curdling scream came out of Shigaraki, which sent shivers down the spines of Iida, Yaoyorozu, Kirishima, Midoriya and Todoroki.
Again, Deadpool placed his hand over the amputated arm of Shigaraki and he was back to normal like before. But with the pain of losing a limb did not go away and Shigaraki kept on screaming.
All Might who heard the scream, looked towards the origin of the sound and that was a mistake as All For One punched All Might which blasted him away from the spot. Then, All For One launched himself towards Deadpool with his full strength.
Deadpool dodged the punch and with a quick slash, he sliced All For One's extended arm and said "I have no issue with you buddy, and I'm not your opponent."
"Then why are you targeting my student?" All For One asked as a new arm formed.
Looking at the healed Shigaraki, Deadpool shrugged while saying "For fun."
Right after saying that he dodged a punch from All For One while saying "Oh~~ Scary~~" in a sing-song voice, which irritated All For One.
Before All For One could punch again, he was punched by All Might and threw him some distance away from All Might and Deadpool.
All Might, still looking at All For One, told Deadpool "Thank you for saving my students. But stop now before things escalate."
Shaking his head and patting All Might on the shoulder, Deadpool said "Shigaraki aimed for something he shouldn't have, and he will get retribution for that by my hand. Don't worry, he won't die."
Saying that Deadpool jumped towards Shigaraki who was crawling towards Kurogiri readying his lightsabers to slice Shigaraki's legs.
But he stopped midway as a shockwave passed through where he was supposed to be. Looking at Deadpool, All For One said "Take one more step, and you will die."
Shaking his head, Deadpool told All For One "How many times do I have to tell you that I'm not your opponent for now?"
Right as Deadpool said that All Might punched All For One while shouting "Double Detroit Smash!"
"Where was I again? Yeah, legs." Saying that Deadpool went towards crawling Shigaraki and sliced his legs. "GHAAAAAAAAAA" All Shigaraki could do was scream at the top of his lungs.
All For One continuously sent trendnails towards Kurogiri but everytime it was blocked by All Might. When All Might was going to punch All For One, he used his teleportation quirk and made Deadpool appear in between them, which made All Might stop his punch midway.
In that gap, All For One activated the wrap quirk of Kurogiri. Seeing that, Deadpool stabbed All For One in the chest and with a giant leap, he reached near Shigaraki.
With a smile that was hidden underneath the mask, Deadpool said "For the next two minutes, you and my swords are going to get intimate!" Then shoved one lightsaber through his chest and quickly healed him.
This process repeated itself as Deadpool stabbed Shigaraki in different parts of his body and healed it, leaving only the pain. Deadpool also made sure that Shigaraki will not die due to the pain that he was experiencing. 'Don't kill him, that's what dad said. He didn't say anything about this though.' Deadpool thought to himself.
By the time Deadpool was finished with Shigaraki, All For One had force activated the quirk of Magne and threw Toga inside the wrap gate made by Kurogiri.
Seeing Shigaraki being attracted towards the wrap gate, Deadpool didn't do anything and just stood there. After he was gone, Deadpool turned towards All For One and said "Please don't say any cliche villain line."
"I'll remember you. And I'll hunt you down." Right as All For One said that, All Might punched him again.
Still holding his ground, All For One glared at Deadpool. Waving at All For One, Deadpool shouted "See ya again, Darth Vader!"
Then, Deadpool disappeared from the scene and the other Pro Heroes started to arrive one by one.
Without missing a beat, the battle between the Symbol of Peace and Symbol of Evil started. Which resulted in All Might losing his form and reverting back into his skinny form. But, All Might felt some kind of power inside of him aside from One For All, but almost similar to it. 'I'll look into it after I finish this.' Thinking so, All Might had his last fight as the Symbol of Peace against the Symbol of Evil and came out victorious.
When All For One lost his consciousness due to the life support getting destroyed, the only thought remaining in him was about Deadpool, a wild card that he hadn't seen since the second user of One For All, who didn't have any mercy to his enemies.
The fight was broadcasted live and everyone saw a glimpse of Deadpool as he disappeared from the Kamino Ward at high speed. The people of the country cheered for their No. 1 Hero All Might to win and for his greatest adversary to lose.
Somewhere in Kamino Ward, now awakened Bakugo, Midoriya, Todoroki, Iida, Kirishima and Yaoyorozu all watched the fight between All For One and All Might in the advertisement LED display around them. They also spotted Deadpool disappearing from the scene right when the media reached there, and they all had the same thought 'Who was that man calling himself Deadpool?'
Far away from the fight and Kamino ward, inside a partially destroyed two story building, Saiba looked at the TV and said "With that, the era of peace is over."