Disclaimer: I do not own BNHA or the Quirk Impulse. Impulse was created by @hawkin_headlines on Instagram. They have a Comic Villain Deku AU Series on Instagram and I encourage you to check it out. It's really awesome! BNHA itself was created by Kohei Horikoshi. I own nothing but the plot for this story.

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Midoriya P.O.V 

I'd only been able to skip Hero training that once. Strangely, they'd kept all windows locked now. I wonder why? At least I got to change my costume beforehand. I may kill someone if I had to fight in that green one...

"I AM HEREEEEEEE!" I looked up form my seat behind Kacchan to see All Might standing in the doorway, a piece of the wall busted. Sighing, I said, 

"All Might, the wall's broken." he took his hands off his hips and turned around.

"My bad! Let's begin the Hero training, shall we! Down to the training stimulations!"  the sound of chairs scarping against the ground filled the air, and soon everyone was out, except me. I wanted to talk to Caterpillar, who stood behind his desk organizing his papers. 

"Aizawa-sensei, I wanted to ask you something." he looked up, rubbing at his eyes. 

"Well, make it quick." nodding, I leaned in, whispering under my breath.

"What would you do if one of your students got hurt by a Villain?" he jerked back, and was visibly trying to stay calm.

"I would...treat them as soon as possible, or keep them out of the fight." I was satisfied. What if there was more than one Villain?

"Thank you, sensei!" I took out my notebook, furiously scribbling. Nodding, I took my notebook and pencil with me; I wanted to take notes on my classmates Quirks for the League. Waving at Aizazwa-sensei, I ran out the door. 

"Thank you!"

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Himiko seemed to be good at designing clothes. If she wasn't a full-blown Villain, I bet Kacchan's life that she could become a designer. The coat was the right length, and the fabric which mad everything up was really comfortable. Hidden pockets adorned the ubsude of my coats, and the weapon belt was filed with smoke bombs 'for safety measures' All Might had said. As I watched the rest of my class fight, I wrote notes on the most bothersome Quirks.

Name: Ejiro Kirishima

Quirk: Hardening-he can hardened his body to the point where it cannot be damaged by weapons. If caught in a battle with him and other students, bring him down first. 

Time Limit: ??? (A/N I actually don't know. If you do know, please tell me in the comments, and I'll add it to the story later.)

Weakness: Is too trusting. Gain his trust, and you're all set to go. He's also prone to surprise attacks. 

Strengths: Once hardened, no physical attack can reach him, unless it's at a nuclear level. Should attempt to aim somewhere in his blind spots before he turns hard.

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Name: Shoto Todoroki 

Quirk: Half Cold, Half Hot-Half of his body allows him to use ice, and the other allows him to use fire. Son of Endeavor. Doesn't use fire side for some reason. 

Time limit: Can use his Quirk as long as he was enough energy and is conscious. 

Weakness: Close range battles. His Quirk is mostly long range, as long as he doesn't use his fire. Attack from behind, and watch out for his ice. 

Strengths: Is always cool-headed. Quirk can be used for both defense and offense. Ice can be used to manipulate his surroundings, such as using it to propel himself, or to keep himself from falling out of range. 

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Name: Momo Yaoyorozu

Quirk: Creation-this isn't powerful on it's own, but can e used to aid allies greatly. Get rid of her, and her group will fall. 

Time limit: As long as there is enough body fluid, she can keep going.

Weakness: Takes time to create weapons, and doesn't do well on her own. Can't create the item if she doesn't know how it works, or the anatomy of it. 

Strengths: Can create as many items needed. Can tire Villains out, causing 'them' to lose. 

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"Hero group 3, and Villain group 5!" I heard All Might call out. That was me. Closing my notebook with a snap, I placed it on my seat. Standing up and brushing my eraser shavings off my costume, I walked towards the stadium.

"Uraraka, let's go." I called out to the brunette, who was chatting with the frog. She spoke for another moment, and the turned to me, smiling. 

"Okay!" then she bounced over, looking too enthusiastic. As we ran into the building, we looked around. Our goals, as the Heroes, was to retrieve the 'bomb' hidden somewhere in the building. The Villains, Kacchan and lida, had gone in beforehand to hide the bomb. As we entered, I heard a thumping above us, then the sound of explosions getting closer and closer.

"Uraraka, go get the bomb. I'll hold off Katsuki." she nodded, running off towards one of the stairwells. 

"Hold me off, huh? And how do you plan to do that, fucker?" I heard form behind me, and I turned to see Kacchan standing there, a smirk on his face and palms ignited. Shrugging, I smirked back at him. 

"I'll go easy on you, Katsuki. I'll use one of my Quirks." I knew that All Might and the rest of the class were all watch, so I pointed a finger in the direction of the camera. 

"You guys watch. I'll beat the crap out of this kid!" I grinned, then turned to Kacchan, who was frowning. 

"Katsuki, I know your moves. You can no longer get to me." he scowled, then launched himself at me with terrific speed. My grin grew, and I hopped backwards to escape. He always started with the big swing. 

"DIEEEEEEEEEEEEEE" he screeched, and I sighed. Ducking under his first blow, I shot up behind him. After delivering a kick to his back, Kacchan tumbled into the wall, only to launch at me again. I thought he was done, so I had my back turned. A blow from his explosions send me crashing the wall, and into the room beyond. 

"Katsuki...your explosions have grown, unlike you." I stood up, brushing off my costume. Taking one of the smoke bombs, I looked up. Narrowing my eyes, I whispered one word. 

"Vanish." the smoke filled the air, causing Kacchan to cough. Grinning, I ran towards the spot I heard the cough from. Once I reached it, I felt a punch to my jaw, and I fell forwards. How smart. A trap to lure in the mouse, eh? Too bad for him. I wasn't a mouse I was a wolf. And wolves fought back when cornered. 

"Die!" I yelled, mimicking Kacchan as I activated One for All and punched the ground. A column of wind shot upwards, blowing the smoke away and giving my time to pounce. 

"Deku, you little-" I smiled, flashing forwards and clamping down on Kacchan's mouth. 

"What was that, Katsuki?" I smiled sweetly, and he pushed me away, only to throw a punch at me which I caught. Leaning in, I whispered, 

"You wanted me to die, right? You wanted me to jump off a roof?" his eyes widened, and Kacchan shook his head no. 

"I-" I interrupted him, giving him kick which sent him to the other side of the room. 

"If I wanted to die, I would've jumped from your ego, down to your IQ a long time ago." he stood up in a flash, only to double over in pain. Waving, I left the room. 

"Don't bother, Katsuki. Your ribs are busted." before leaving, I took one last look at the camera. 

"Hoped you enjoyed the show." I pointed a finger, and bits of electricity fried the camera. Humming to myself, I hopped from floor to floor as I reached the top floor; the one the bomb was hidden. 

"Uraraka, I'm here!" I smiled, letting her know. 

"Get. Deku, do you think you could distract Iida while I grab the bomb?" my smile faltered, and I mumbled, 

"Sure." no one ever called me 'Deku' other than Kacchan, and hat was in the past. Running towards Sonic, I poked him. 

"Come on, let's play!" I smiled, and ducked behind him and kicking him down a floor, into the hole I'd created as I'd smashed the ground. Looking down, I called out, 

"You good?" then a blue blur shot right back up, lunching my straight in the jaw. I'd admit, that hurt. 

"Ouch." I slid back, one hand rubbing my jaw. I sized him up. Having a speed Quirk was useless if you didn't have great strength to go on par with it. He only had speed; I had the strength. Besides, I'd wanted to try out Impulse again. 

"Zap!" I copied Flicker's voice. He was a Pro Hero capable of controlling the weather, if only to a certain amount. He specialized in electricity and thinner, as well as rain. Green electricity shot from my fingers, and raced towards Sonic. His eyes widened as he tried to run, but it covered the ground, zapping everyone. Including Uraraka. Groaning, they fell to the ground. I skipped towards the bomb, putting a hand on it. Giving the camera a smile, I called out, 

"Retrieved!" then I destroyed that camera, too. An intense pain shot through my hand. Bending over, I clutched it and fell over. Darkness claimed me a moment after. 

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Aizawa P.O.V 

That kid...was a monster. Quick, and brutal. I sat beside the door as my students entered Recovery Girl's office one by one. Each one came out pristine. Until the last group went. They didn't come back out. Walking in, I spotted Uraraka, Bakugo, and Iida on beds, and Midoriya being patched up. 

"How are they?" my voice came out monotone, but I tried to express my concern. Recovery Girl looked up sadly, and shook her head.

"Not so good. The electricity affected their bodies greatly, so they'll be missing class for a week." I turned to glare at Midoriya who was shaking his right hand. 

"Midoriya, what are you doing?" he looked at me, those green eyes dull. His eyes, which were normally a bright green, had turned so dark that it looked like black. I could've sworn his eyes flashed red. I took a step back, before the light appeared in his eyes again and he smiled. 

"Hm? Oh, I think I overused my electricity Quirk. My hands numb. But it gets better soon! It always does." what? Did this boy just say 'always does'? But..this is the fist time we've done Hero training with Quirks. Which means...

He was using his Quirk elsewhere. 

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Midoriya P.O.V 

I was released from Recovery Girl's office after my hand had feeling again, and I had skipped right back to the bar. Opening the door with my other hand, I walked in. Spotting Himiko on the couch facing back to me, I snuck up on her and hugged her. 

"Himiko! I've missed you so much!" she fell off the couch, looking surprised. 

"Izu! Welcome back!" Shigaraki-kun stuck his head back into the room, spotting me. 

"Brat, Master needs to talk to you."  Then I realized Kurigiri and Dabi weren't in the room. Looking around, I spotted Himiko again. She looked sad. 

"What's going on?" I asked Shigaraki-kun, who only frowned. 

"Master needs to talk to you." I nodded, hugging Himiko one last time before heading into the basement with Shigaraki-kun. Upon the arrival of the room, I walked right in.

"Welcome back, Midoriya. I have a job for you." I was confused. 

"Dabi has gotten caught by police, and Kurigiri is still on the run." nodding, I understood. 

"You want me to break Dabi out of jail." All for One nodded, and I smiled. He reached into one of his pockets, and took out something. 

"Take this. We can't have someone recognizing you." I took it, inspecting it. It was a gas mask, black and silver with glowing veins of green. I put it on, smiling. 

"I'm ready."

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After stocking up on swords, guns, and throwing knives, I walked towards the prison under the cover of shadows. I couldn't have someone see my Hero Costume, so I'd worn the clothes Himiko had bought me. A black vest, white dress shirt, complete with a red tie. I'd also tied up my hair, and gelled it. Wearing dress pants and black sneakers, I snuck towards the entrance, letting two of my throwing knives fly. A wet squelch, then two thuds.

"Guards are down." I said into my earpiece, and heard Shigaraki-kun's voice in return. 

"Good job. Dabi is somewhere on the second floor. I've told Kurigiri to meet you guys in the park." not responding, I crept into the building. Somewhere on the second floor, huh? Racing up the stairs and passing by dozens of rooms, I peeked in to make sure it was Dabi. So far, no. Then, at the far end of the hall, I spotted a stitched arms draping out of a door window. Of course. Jogging towards it, I powered up One for All. 

"Get back!" I hissed to Dabi, who back up to the window. 

"DETROIT SMASH!" I whisper yelled, and the door cracked. I smashed it over and over again as Dabi watched. Soon, the door opened and out came Dabi, still dressed in the outfit he used to kill someone. 

"What did you do this time?" I mused, as I shot electricity towards his Anti-Quirk collar. It beeped, then shut down. 

"I just killed one person. One." he groaned, and I chuckled. 

"Only one?" he glared at me, before flipping me off. 

"Yes. Only one person, dumbass." giggling, I ran towards the window of the floor. 

"Stop! F-freeze where you are!" looking before me, I saw a police officer holding his gunfight at my face. I waved for Dabi to lean down, and I whispered into his ear. 

"On the count of three, I jump. You jump after me, but set the building on fire first." he nodded the straightened again. I poked him once, then once more. On the third poke, I turned and leapt from the window. I rolled and landed, looking up to see Dabi jump. He held out his hands, summoning blue fire to his aid. 

"Surprise." he hissed before he landed. After a moment, the building went up in flames, people calling out in pain. 

"S-stop!" I looked back to see the same police officer. He'd jumped after us, and was now trying to stand up. I nudged Dabi, and we broke into a run towards the park. Upon arrival, I saw Kurigiri standing under the shadow of a tree, waiting. Once he saw us, he opened a portal and  Dabi jumped in. I whirled around, throwing a knife into the officer's head before zapping him with all my might. After twitching, he lay on the ground, unmoving. Then I had an idea. 

"Wait here." I told Kurigiri, and walked towards the police officer. I sliced his stomach open. Using the blood, I wrote a cursive 'D' on the ground beside him. 

"What are you doing?" asked Kurigiri, who was watched the scene, looking amused. I turned around to smile at him. 

"Letting them know that there's a new Villain in town."  

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What did you guys think about the cursive 'D'? Do you think Bakugo will find out? Aizawa seems close. All Might may know. As for the promised character death, it'll be coming soon! It's currently lurking there, in the shadows of the next chapters.

Word Count: 2594

I think this was one of my longest chapters yet! I hope you liked it!

Please don't forget to like, so I know you're enjoying the book!

Thank you for reading!