Loyalists tore at the wall tirelessly. Many used Quirks to create more cracks.

The citizens and heroes inside all jumped and gasped as the energy field sparked and fizzled slightly.

"Nezu, the defenses themselves won't hold for very long." Shota Aizawa said to the small principal.

"I'm afraid you're right..." He replied.

Midnight stepped forward to his office. "Sir, this is not just any villain fight. It's-"

"War. It's war." Nezu said. "As the acting leader of these people and these heroes, I may have to make an executive decision that is against everything we've stood for..."

"It'll be in defense." Shota said.

"And those...things." Crow-Man intervened. "They don't feel. Whatever they used to be, when they pledged themselves to Promethys, they lost all humanity within themselves."

Nezu sighed, walked over, and sipped from the cup of tea left on his desk.

"We may have no other choice. They've circled the entire perimeter of the barrier... The only thing left is hope. Do we have enough hope amongst our survivors to fight?" Nezu asked rhetorically.

The teachers and heroes in the room looked at each other.

"We can do it. Once they break through, that's the last barrier they ever tear down." Aizawa insisted.

"There are things Promethys cannot destroy." Midnight said.

"I agree." Nezu nodded. "Mrs. Midoriya's spirit is one thing. She can lead."

"I am impressed with her leadership." Aizawa agreed.

"Wait! Something's happening out there." Crow-Man quickly rushed to the closest window.

Promethys stood proud, watching his forces descend upon the school. When suddenly, the sound of thunder shook the earth.

But this was not natural thunder.

As he turned to the source of the noise, a great fist planted itself right into his skull, cratering deep as the rest of the assailant flew into him.

Promethys was thrown back, crushing a few Loyalists who attempted to catch him, and slamming into the side of a crumbled building.

The mighty villain quickly regenerated from the blow and looked up to see Izuku Midoriya standing tall amidst his forces that backed away in fright.

"You should have killed me that day!" He shouted.

"I see that now. Perhaps I should have!" Promethys roared and exploded from his spot on the ground.

Izuku readied his fists and clashed with the titan in the air. Each sent the other in the opposite direction across the great wasteland the Loyalists created.

Promethys roared and activated a few Quirks on his body, but then grunted and stopped. "Blasted virus!"

Izuku noticed this and powered up One For All.

"What's the matter, Promethys? Too much to handle now?" Izuku asked.

"Even with the virus in my blood holding back my abilities, I can still defeat you and take this world!" He roared and charged, forming horns on his head that curved down then up, pointed to Izuku, who charged back.

The hero then dropped down and slid under Promethys's legs, activating Black Whip and tripping the villain, planting the horns deep in the ground.

Promethys roared again and broke off of his horns. His body glowed bright pink and he suddenly disappeared.

Izuku gasped and turned around to find Promethys now standing behind him.

Before he could react, Promethys thrusted a large spike from his arm toward Izuku's chest.

Using his strength, he gripped the tip of the spike before it hit his body and held it back.

Yet Promethys continued to push forward, inching the tip closer and closer to his heart.

Izuku instinctively activated Fire Sight and blasted the villain's face, loosening his grip and jumping away as the villain stumbled back.

Izuku then activated Float and began to fly above Promethys's head, then Black Whip emerged from his arm and wrapped around the villain's neck.

Promethys gagged and sputtered for air as he gripped the dark mass that strangled his throat.

"You...can't...kill...villains..." He hissed.

Izuku realized he had a look on his own face of pure hatred and rage. The face of a man with the intent to kill.

He loosened his grip and Black Whip dissipated.

It was then that Promethys leapt up and launched his knee up into Izuku's chin. Then he planted his elbow into Izuku's spine and slammed down to the ground with the hero.

People started watching from the windows and the holes in horror.

Izuku struggled to get up, but then Promethys's foot stomped on his back again.

"Y'know these last few months, I've spent much of it searching for the source to your demonic powers. I've learned much about it... But no way to obtain it." He said.

Izuku swung his body around, knocking Promethys off balance. He then used his arms to propel up, kicking the villain in the face.

Promethys blasted his body away with a laser from his eyes.

Izuku attempted to roll over and blast him back with Fire Sight.

Their various eye laser beams clashed halfway across their shared distance in a blinding light that cracked the ground between them.

Promethys activated an ice Quirk that froze everything before him, even withstanding the heat and intensity of their lasers, and froze Izuku in place.

"How dare you use that Quirk?!" Izuku gasped.

Promethys chuckled and rushed forward with engines in his legs, kicking Izuku at high speed.

His body crashed out of the ice and tumbled across the empty field. Clouds of darkness were everywhere, not just in the sky.

The hero struggled to get up once again, but then strained and fell back to the ground.

His Quirk was tiring him now. He was losing energy fast.

Promethys stepped closer to him, noticing his body slowly giving out now.

The villain looked up to see Tsuyu Asui and Hanta Sero using her tongue and his tape to pull Izuku's body to safety at the gates of UA, which opened with an explosion, knocking all Loyalists out of the way.

Izuku looked up to find Katsuki Bakugo standing before him.

The Explosion hero, and his childhood friend turned rival, reached down, pulling the green-haired hero to his feet.

There, he could see as numerous heroes emerged from the front gate.

Eijiro Kirishima, Mina Ashido, Fumikage Tokoyami and his Dark Shadow, Tsuyu, Hanta, and Katsuki already stood by Izuku.

While everyone else began to march out of the school grounds ready to fight.

Koji Koda, his intern Hansuke Rodriguez, and Yuko appeared and joined the ranks.

Toru Hagakure, Mashirao Ojiro, and Ochako Midoriya rushed out.

Ochako quickly made eye contact with Izuku and they ran to each other in a warm and tearful embrace.

Mezo Shoji, Yuga Aoyama, Rikido Sato, Tenya Iida, Denki Kaminari, Kyoka Jiro, Minoru Mineta, and Momo Yaoyorozu followed out together.

Hitoshi Shinso walked out in his hero costume ready to fight with everyone else, giving Izuku a nod.

Along with Yui Kodai, Pony Tsunotori, Tsetsutsetsu Tsetsutsetsu, Setsuna Tokage, Itsuka Kendo, Hiryu Rin, Ibara Shiozaki, Kinoko Komori, Sen Kaibara, Yosetsu Awase, Togaru Kamakiri, Jurota Shishida, Neito Monoma, Reiko Yanagi, Shihai Kuroiro, Nirengeki Shoda, Kosei Tsuburaba, Juzo Honenuki, Manga Fukidashi, and Kojiro Bando who all came with their Quirks ready.

Camie Utsushimi and Inara Yoarashi along with their old teacher Ms. Joke were there as well.

Then the veteran pro-heroes emerged: Midnight, Eraserhead, Present Mic, Snipe, Vlad King, Mt. Lady, Crow-Man, Gran Torino, Thirteen, and Ectoplasm marched forward on behalf of their fallen friends.

Mei Hatsume and Melissa Shield appeared with various support items and inventions ready to fight.

And the original Big Three of UA, now great heroes like the rest of them: Nejire Hado, Tamaki Amajiki, and Mirio Togata, who was starting to regain control of his Quirk again at a professional level assembled.

Several students with trustworthy track records and remarkable Quirks were also asked to join. This was no longer a fight between heroes and villains, this was a war and all who were able were called.

Izuku felt tears flow down his cheeks seeing all these wonderful heroes standing before him ready to fight for peace.

He looked back and met eyes with Promethys, who had reassembled his army of Loyalists on the other end of the barren land before the city.

Denki smirked at the army before them. "I think it's time we give these fools a good ol' fashioned-"

"PLUS ULTRA!" Ochako screamed.

"PLUS ULTRA!" Izuku shouted, raising his fist.

"PLUS ULTRA!" The army of heroes repeated and charged forward as one.

Mt. Lady rushed ahead in her giant form while heroes like Mei, Inasa, and Nejire flew overhead.

Promethys gave the signal and his thousands of Loyalists charged forward activating their Quirks.

Izuku's fears had disappeared, having full trust in the army that ran beside him against this powerful foe.

Then the forces clashed.

Heroes with their impressive Quirks tore through the masses of Loyalists like paper.

Nezu's words echoed through their minds in memory. "This is no longer a domestic battle of good versus evil. Promethys has turned this into a war. With war, there is death on both sides."

The heroes, for the first time in their lives, fought without limit. Fighting to kill, to defend.