The First Weapon

Sato brought in the part to the machine which Nieto and Scarecrow brought Mei Hatsume from her home to the base. Mei shouted, "Let me go!"

She then stopped when she heard Izuku's laugh, Mei froze in horror when Izuku revealed himself, "So, this is the best that UA has to offer."

Izuku came over to Mei, "We going to use that brain of yours to help us with our first weapon."

Mei raised an eyebrow, "I will not create anything for mass destruction or for you."

Izuku put his right hand over his heart, "You're a heart breaker, aren't you? Well we will make you want to create it!"

Mei was then being dragged into a room which Izuku was laughing as they strapped her to a chair. Izuku pulled out a syringe from the table in the room, Mei asked, "What are you doing?!"

Scarecrow chuckled, "It will be a few quick adjustments for you… Brainiac."

Izuku injected the needle into Mei then Mei's eyes were now black and her skin turned green. Neito asked, "What are the adjustments?"

Izuku smirked, "Nezu's intelligences quirk amongst other intelligence boosting quirks and something to make her want to build things."

Scarecrow smiled, "She will be able to finish the weapon that will lead to destruction of the city, then the country, then the world."

Mei then smirked, "What are we building?"

They led her to a huge piece of machinery which Neito said, "This is the I.A.M.M.A.D."

Izuku smiling, "The Insanity Activating Mode Machine Apocalyptic Device or I.A.M.M.A.D"

Mei smirked, "A machine that will turn everyone insane, smart… how does it work?"

Scarecrow chuckled, "It works by turning nitrogen in the air into a gas that turns people who breathe it to go insane."

Mei nodded, "I know what to do to complete it, you want this to be powerful enough to make the city insane. It will be ready by tomorrow."

Izuku giggling, "Good, remember we are immune to the gas because it only effects the sane. We are different because we know what the world is truly which makes us insane and also the syringes gave us you know protection."

Mei walked to the machine, "I guess I will get to work."

Eraserhead

Eraserhead was looking in the alleys to find a lead on where Deku is at and what he is planning. A guy with an Eraserhead mask was running for his life which Eraserhead was watching him close until he saw a teen with a redhead and leather jacket jump on top of him. Then Crawler, Knuckleduster, and Pop Star Step came to view, Knuckleduster shouted, "Dammit kid, you could have led us to a trap!"

Katsuki shouted, "This bastard works for Deku and I'm going to beat some answers out of him!"

Eraserhead knew that voice which he jumped down to land behind them, "Bakugo."

Katsuki and the vigilantes look at Eraserhead, Katsuki asked, "Aizawa-sensei?"

Aizawa punched his head, "Damn brat, where the hell have you been?!"

Before anyone could speak, the man laughed for bit then said, "You must be Kacchan, boss does speak so fondly of you. He does have a message for you."

Katsuki grabbed his shirt, "What is the message?"

Knuckleduster grabbed Bakugo to get him off the man, the man smiled, "Things are about a whole lot crazier tomorrow. I AM MAD!"

The man started foaming at the mouth and died, the five were in shock by the event, Aizawa grabbed the man, "What does 'I AM MAD' mean?!"

Aizawa, the other pros, and the police have been capturing a few villains and criminals in the past two weeks which they all revealed the same words 'I AM MAD' before they died. They didn't understand the words, were they talking about themselves or… something else entirely. They didn't have Nezu anymore, so they were blind in the situation with Deku who is several steps ahead of them. When Aizawa turned around to find that the vigilantes vanished from him, now he was mad that he lost Bakugo but now he knows Bakugo is Red Hood.

Aizawa then arrived that the police station, an officer came up to him, "We finally got a guy who has surrendered himself to talk to the heroes about Deku."

Aizawa asked, "Who?"

The man said, "The hero killer."

Aizawa was in shock, "What does Stain know about Deku?"

The cop shrugged which Aizawa ran to find Yagi, Yamada, Ingenuim, Hound Dog, a few other heroes, and the police commissioner. Aizawa asked, "What does Stain have?"

The commissioner said, "We were waiting for you before we question him."

Ingenuim said, "Me and Stain defeat one of Deku's top men Man Bat a week ago. Stain came to us in fear and a broken arm saying he found something horrible and we need to stop Deku."

Then Naomasa came to the group, "I'm ready went you all are."

The commissioner nodded which Naomasa, Yagi, and Aizawa entered the room to find Stain in a chair without his weapons, right arm in a cast, and outfit but in an orange jumpsuit. Yagi looked at Stain, "I'm glad you surrendered yourself to us Stain, but you said you have something on Deku."

Stain looked at Yagi, "All Might, I've always been a fan of yours because you are a true hero unlike most… Eraserhead, I'm also a fan because the same. I always wanted to be a hero, but a lot of people saw Bloodcurdle as a villain quirk."

Naomasa said, "We aren't here for…"

Stain waved him, "Sorry, I never actually expected to be in the same room as All Might but I'm here to talk about Deku. I found his place after following his grunts through multiple complex pathways. What I found was horrifying, he is building a weapon."

Aizawa raised an eyebrow, "A weapon?"

Stain nodded, "I listened in on their conversions, Scarecrow designed a machine that would turn the nitrogen in the air into a gas that turns people insane."

The three were in shock, Yagi asked, "What is the machine called?"

Stain replied, "I AM MAD."

The heroes and police on the other side of the glass window were also in shock that Deku was creating a machine that would threat the city, country, even possibly the world. Aizawa said, "I AM MAD is the name of the machine that would change the world for the worst. 78% of the air we breathe is nitrogen, this is bad and we need to stop this now."

Noamasa asked, "Where is there base?"

Stain looked into Yagi's eyes, "The old warehouse with the clown on top."

The three left the room to find the building that Stain was talking about, the police were also on the move to find it. But before they left, the screens turned on which Izuku appeared on the screen, "All Might, I see that you are heading to my base of operations. What do you think of my plan and weapon? Genius, right?"

Yagi was pissed and left the building to go find it but Izuku continued, "But I have a question, what would a real hero do, save the innocent or go rampaging to stop the villain?"

Yagi stopped at building to look at the screen on it, the screen revealed to boats, Izuku chuckling, "One boat has a bunch of villains that you yourself have arrested, the other has innocent families on board. They each have a bomb on board, but here is the kicker. The villain ship has the remote to detonate the bomb on the ship full of innocents while the ship of innocents has the remote to detonate the bomb on the villain ship. They have 3 minutes to decide which ship to blow up, if they haven't decided by then, they both explode."

Everyone was in shock by this, Izuku is making two ships of people kill each other. Yagi looked at him in rage which Izuku laughing, "The choice is yours, All Might! All for One will be watching as well!"

Yagi grunted as he flew to the boats at great speeds to save the two ships from the bombs.

All for One

All for One is enjoying Izuku's show and how All Might was just being played like a fiddle. All for One knew his role in this, he is the final straw that breaks the camel's back, the last thread that kept All Might from insanity, he was the villain that get his revenge against archenemy. Izuku appeared in the room, "You enjoying the show?"

All for One smiling, "You are evil, you surely want my title 'Symbol of Evil'. Why do you want it so badly?"

Izuku smiling, "You know, before it was revealed I had a quirk… I thought my life as Izuku Midoriya was a tragedy, every day he there was a set of stairs that he would take to go up to go to school. He always came up those stairs sad, but then I realized my life… was a comedy. On that one bad day, when I heading to my home to run away… I came across those stairs dancing my way down."

Izuku started laughing, All for One thought about what Izuku said then he realized that the stairs he was talking about were the stairs of his sanity. He would climb up the stairs of sanity and was always sad, but as he went down those stairs to his insanity… he was happy and free. All for One started laughing with him, he believes Tomura would make an excellent villain but Deku was a villain that would go down in history as the evilest villain who has ever lived.

Izuku looked at him, "You were probably at one point well known and people feared you, but then you became a legend. I don't want to be a legend… I want to be a fact, remembered by all, and something that no one can cover up."

All for One touched Izuku, "I will give you something to give you a quirk that will help you… you see I have 5 longevity quirks. Each one lasting anywhere from 500 to 2000 years, you will have the 1000-year quirk."

Izuku smiled, "I can't wait to see the candles of my 1016-year birthday cake."

The doctor then came in with a pod, "She is finished, I pronounce Nana Shimura alive and well."

The doctor opened the capsule to reveal a woman with long black hair with grey eyes. Nana woke up, "Where… am I?"

All for One chuckled, "Been a long time… Nana."

Nana's eyes grew wide, "All for ONE!"

She tried to move but she was restrained, Izuku giggled, "All Might is now easier to play with."

Nana was trying to break free then she looked at All for One's face, "You are uglier the last time I saw you."

All for One said, "I guess you are proud of your successor for doing this to my face."

Nana smirked, "I would be prouder of him if you were dead."

Nana looked at Izuku, "And you are?"

Izuku walked up to Nana, "The man who will breaks your successor and the next 'Symbol of Evil'."

Sato the grabbed the pod to carry it for Izuku which All for One asked, "Are you going to rape her?"

Izuku laughing, "Yes! Me, Two-Face, Bane, Mad Hatter, Riddler, Man Bat, and Scarecrow are going to have a turn with her! Nothing is more brutal to a person than raping their dead master by multiple men on camera viewed by the city that she once protected."

All for One smiling, "Bring her back with some hope left, I want All Might to see that before I kill her and her hope in front of him."

Izuku nodded as they went through the portal back to their base.