Genius Yet Insane

Chapter 4: Massacre

The League's Base

Izuku came to the bar to help Tomura on how All for One works and how to properly use multiple quirks. Izuku told Aizawa about the attack on the USJ to bring more 'targets' for Tomura's practice. Izuku has 52 AQs to show Tomura his combinations which can be proven powerful. Izuku told Shinso about the attack that he should come to help the heroes to prevent Tomura from going on a murderous rampage. Izuku could see it in Tomura's eyes that give him the quirk was like giving a toddler a nuke and he wants to murder at the USJ.

Izuku believed that he was the Symbol of Insanity because he was a mad scientist that has very little ethics and insane methods that weren't allowed by law. He had the quirks to defeat many heroes and mentioning the All Might killing nomu will bring stronger heroes. Izuku was fueled by revenge and nothing else, he wanted it badly, but he had limits for now. He hacked into the USJ security cameras to see Mirio was there, which Izuku smiled, "The target is there... time to go."

Izuku walked up to Tomura to ask, "You ready to learn about quirk combinations and why they are important."

Tomura smiled and Kurogiri opened a portal to get everyone to the USJ to do the strongest attack with such powerful quirk users.

USJ

All Might, the rest of the top 20 heroes, the teachers, The Big Three and Class 1A students were there wait for the league to come out to fight them. They saw the warp gate open which Tomura, Izuku, and Kurogiri came out then the All Might killing nomu came out. Tomura said, "Why there this many NPCs here?"

Izuku chuckled, "I brought them here for one thing Tomura..."

Kurogiri and Tomura looked at him which Tomura asked, "And that is?"

Izuku laughed like a madman, "For target practice!"

Izuku put his hand on the ground to say, "AQ #32: States of Matter!"

The ground under the heroes became liquid and the solidified when the heroes were neck deep in rock, which Tomura and Kurogiri in shock which Izuku said, "#32 allows the user to turn anything they touch into a different state of matter. They can make solid to liquid, liquid to gas, gas to plasma, plasma to solid, and so on. An interesting quirk that I obtain a while ago, indeed useful like #49: Overhaul."

Some of the heroes like All Might and Mirio got out which Izuku made a black ball while chanting, "#5: Multiplier, #11: Dark Matter times 5, #18: Gravity times 6, #19: Black Lightning times 3, and #48: Anti Matter times 2."

Izuku threw the ball to cause a super big explosion which destroyed half the USJ there are survivors, but 10 heroes died from the blast. Tomura and Kurogiri were in shock by the power which Izuku said, "I call that one 'Black Nuke'."

All Might protected everyone else which All Might charged at Izuku but the nomu got in front of All Might to fight him. Aizawa decided to step in but Izuku said, "No so fast Aizawa, #51: Erasure!"

Aizawa got his quirk erasing quirk erased which he found himself useless which Bakugo flew at Izuku. Kurogiri was about to warp him away but Izuku rose his hand to stop him which Izuku chanted, "#5: Multiplier and #15 Projectile Halt times 2."

Bakugo stopped in his place and couldn't move, which Izuku said, "#18: Gravity, #28: Clones, and #36: Confidence Manipulation."

Bakugo fell to the ground and couldn't move because the gravity was pushing him to ground and he couldn't move. Izuku then split apart to make 2 more clones of himself, then Bakugo went from being angry to being scaried. Izuku told his clones to deal with Aizawa and the teachers. Izuku went to Bakugo and said, "You see Tomura #36: Confidence Manipulation, allows the user to make people around them super confident or scaried shit less like Bakugo here. My clones will fight the heroes while we deal with everyone else. Now let's see this 'Air Cannon'."