Executioner

After falling into the shadowy figure's body, Aiden instinctively executed his astral shift and appeared outside of the orb of darkness where most of the class were. Seeing that Mina was safe he released a sigh of relief as the thought of losing someone else he was close to terrified him. Unfortunately it was at that moment that he realized that Momo and some other members of his class were missing.

The pain in his chest flared up again as he realized that once again villains were fucking with his life. That pain in his chest, those scars carved into his body, they were all reminders of what he had lost. It was his instincts telling him that he needed to kill! Holding them back as he had previously done was causing him to experience psychological pain that he had hallucinated as real.

Seeing that most of her students had disappeared, no.13 told Iida to run back to the school and tell the faculty what was happening. Iida needed some convincing because he thought that it was dishonorable to run from a battle but was quickly convinced.

The shadowy figure known as Kurogiri saw this and lunged at Iida but was held at bay by no.13 who used her quirk "Black Hole" and sucked in the advancing gas. Kurogiri found a way around this as he opened up a warp gate in front of himself and opened one behind 13 sucking her in with her own power and injuring her.

Iida started running for the exit at this point. When Kurogiri tried to go for him, Aiden suddenly came out of nowhere and pushed Iida forward before getting swallowed by the darkness once again. The moment he found himself engulfed by Kurogiri he activated his astral shift and appeared 10 feet away.

"Aiden!!" The rest of the class yelled in surprise seeing that he was here.

Kurogiri didn't appreciate being interrupted and lunged at Iida again but was once again interrupted by Aiden. Realizing that he had no way to damage a being made of smoke, he attacked the weird neck armour that he was fiercely protecting.

Seeing as how he allowed his body to get struck but not this weird neck piece, Aiden constructed a knife and focused his efforts on attacking it.

"I-is that a knife!" Uraraka said in surprise.

"Yeah." Mina nodded seriously. "Aiden's getting serious."

Feeling the pressure rise on him, Kurogiri was forced to retreat and could only watch as Iida left the building.

'KILL!!'

The aura around Aiden intensified and caused Kurogiri to stare in shock while the rest of the class trembled. Even Mina, the person who had known Aiden the longest in the class trembled as this was the her first time seeing him like this.

Purple light escaped from his eyes as the speed of his attacks increased. Feeling the muscles in his body tighten, Aiden's breathing technique changed as he exerted the full potential that his body could handle.

"DIE!"

With no choice left, Kurogiri ran! He ran all the way back to the man with the hands on his face. Ignoring the shocked looks on his classmates faces, Aiden looked at the direction that Kurogiri had retreated to and saw a large black monster holding Aizawa's broken arm and was periodically smashing his head into the concrete.

"Villain..." He muttered before walking in that direction.

"Aiden don't go!!" Mina yelled after seeing the direction he was heading in.

"I have to." He paused his steps. "Protecting the class is the class rep's job."

Tightening the muscles in his legs, he pushed off the ground with all of his force and charged in the direction of the escaped Kurogiri.

---

By the time he'd got there, Deku was about to hit the man with the hand attached to his face. Looking at the man, Aiden saw a pale, tall-ish man with light blue hair. He had 14 disembodied hands holding onto his body, their positions were his arms, chest, neck, head, and face. He looked incredibly sinister because of these hands but at the same time he looked like a tryhard.

Shoving these thoughts to the back of his mind, the uncomfortable feeling in his chest lessened now that he was holding his knife.

"SMASH!!" Deku's voice rang out as his fist landed on the body of the Nomu that suddenly appeared.

"Eh?" He said in shock as his punch did no damage.

Hearing what he called his attack, the pale-ish man turned towards him. "You called it smash? Are you a follower of All Might?"

Grabbing the outstretched arm, the Nomu was about to hit him in the face but was forced to retreat when it heard a voice so cold that it caused one to shiver utter the word. "Slash."

*SWOOSH!*

An arc of purple light came flying through the air and would have slammed into the Nomu if he didn't let go of Deku.

"Huh?"

Turning his head in the direction the arc of energy came from, the man who introduced himself as Shigaraki Tomura raised an eyebrow.

"Aiden-san!" Deku almost cried out in relief.

"Aiden..." The weakend Aizawa muttered weakly.

"Human." Aiden asked ignoring the two of them.

"What?" His question surprised Shigaraki.

"Is that thing human?" He repeated and pointed his knife towards the Nomu.

"Its an artificial human."

"I see." Having confirmed his suspicions, he started walking one step closer to the Nomu while releasing a horrifying amount of killing intent.

"Y-You're a hero." Shigaraki stuttered after feeling the pressure he was releasing.

"No, I'm your executioner."

After seeing how Deku's punch dealt no damage to the monster, Aiden had already come up with multiple theories on why it could withstand such a blow. The most plausible one was that it could offset some impact damage. But this didn't matter as Aiden didn't plan on fighting it with the same tactics that Deku used.

When he was still an assassin, Mike taught him a valuable lesson about fighting. Take away anything that gives the opponent an advantage.

"Aiden stay back! That thing was made to kill All Might!" Deku yelled.

Ignoring his warning, Aiden didn't even hesitate as he drew closer and closer to the Nomu.

Feeling that something was wrong with this kid, Shigaraki didn't hesitate and ordered the Nomu to kill him.

"What are you waiting for? KILL HIM!!"