(Narrator's P.O.V) 

The first dozen charged forward at Y/n. She raised her hand in the air ahead of her, stopping the first wave of villains by pressurizing the air around their heads. They all started choking, not able to breathe, and this startled the others. The look on her face grew dark and evil.

"You know, I really hate every single one of you. How about I show you just how much I can't stand the thought of you bastards breathing." She bawled her hand into a fist. They all started to scream out in agony. In one swift move, she snapped her arm back, and every captured head had exploded like water balloons. Blood and shards of skull bones splattered all over the other villains. Shock and fear covered their faces as they staggered back. "Who's next?" They look up and see the scary hero's form sprayed in crimson red drops all over her body. A small smile made its way to her face. "Well come on. I don't have all day. You wanted to have fun. So let's have some fun."

"She's fucking crazy!"

"What the fuck kind of quirk does she have?!"

"Don't back away! We can't leave, the boss will kill us!"

"Fuck that! She'll kill us before we even try to leave! She's blocking us from the rest of the other exits!"

"Then it won't matter! If she's going to kill us anyways, Then I ain't goin' without a fight!"

"Damn right! If I'm going down, then I'm taking this bitch down with me!"

"Alright, let's go!" 

Instead of in waves, everyone charged at her all at once.

She jumped high up into the air. Upside down she created a platform at her feet, kicked off of it and projectiled herself down into the center of the horde, flipping up-right with a second platform underneath her, and smashed the villains below her. Blood sprayed out from the sides below it, choking the others as they screamed when it was caught in their mouths. 

"YOU BITCH!!" A man came from behind to hit her, but she swung her leg back and caught her sharp heel into his eye. He screamed, grabbing at his face. When y/n landed back on her feet, she lost her footing and fell to her back, knocking the air out of her lungs. 

She looked really quick and groaned. His eyeball was impaled at the end of her heel. Quickly, she scraped it off with the other foot and tried to get up, but was slammed to the ground by several villains. It turned into a dog pile as every single one tried to get in a hit on her. Everything was overwhelming as all she could see was fists and weapons aiming her way, pain being the only thing she could feel. 

Fear couldn't help but hinder her as she struggled to fight back, but to no avail. Each hit against her body hurt to no end.

"This is what you get!!" 

"Just die!"

"You killed our friends, so now we're gonna kill yous!"

One last thought came to her before it was all lost. 

"DON'T YOU DARE TOUCH IZUKU OR MY FRIENDS!!"

She felt a burning adrenaline fill her mind and body, and let her instincts take over. Her body illuminated a bright blue light. When it became too bright, all the villains tried to back away, but was thrown high into the air. As if time stopped, they all were stuck in the air, and screamed and tried with everything they had to get back to the ground. They were lifted higher into the air and began to choke. Their airways became tight and in seconds, blood started dripping from their eyes, ears, nose, and mouths. 

Y/n stood in the center of the circle and watched as they bled out from above. 

"Run! She's fucking crazy!"

"Oh my god!"

"I don't want to die!"

"Keep running!"

Looking back, she saw the few villains that had ran off before the explosion, running towards the other zones. She began to giggle and laugh as she made her way to them, bringing the circle of torture with her. 

"Ammunition." She flashed a grotesque grin, raised her arm, and flicked her hand down. One of the floating villains above her was suddenly flung forward and smashed into two of the fleeing people with so much force that bones were broken out of the skin and a full rib was forced back out of the back muscles. Lifting the corpses up, she added them to the circle above her. 

"Y-you're no h-hero, or villain.....y-you're a-a de-demon from hell." A female villain above her choked out to y/n. She watched as the insane girl laughed and laughed at her comment, then felt her blood run cold when she seemed to snap her neck back to look up at her. It was almost inhumane, how contorted she became, and the look on her face could make any horror film look like a kids movie. She waited in fear, expecting a reply, but was more disturbed when the girl never said a word. She just smiled wide with teeth as drool and blood ran down her chin. Her eyes were too dilated, the iris was blocked out by the pupil. The villain jolted when y/n faced forward again and ran, starting a faster pursuit to the last 3 runners. She took her time with the hunt, and in no time, they were all dead. She collected the last of the corpses, and found herself at a row of thick trees. 

Y/n heard distant voices and straightened up. "It looks like our play time was cut short," she looks the floating group, no response came from them. The ones that were originally alive, died of blood loss. "but it was fun having you guys around, see you." She stepped out of the circle of dripping blood, and let them fall. Their impacts splattered blood everywhere and the snapping of bones were heard from how high they were. But no screams were made. Making her way through the trees, she walked forward. "I have to go find my friends." Noise could be heard up ahead, so she sped up the pace. As soon as she passed the fountain, she spotted the one she wanted to see the entire time. Izuku Midoriya. Next to him was Mineta and Tsu. 

(Your P.O.V)

'Oh Joy! My friends are safe!' 

"Hey gu-!" I stopped when I caught a glimpse of Tomura flash in front of them. He reached for Tsu, but Izuku jumped up to stop him. I ran forward. When Izuku seemed to get a hit in, the air cleared, and showed the biggest most ugliest creature between the two. 

'What the hell is that?!'

It went to grab Izuku. I ran as fast as I could. All I could think was, 'crapcrapcrapcrapcrap!!!'

"STAY AWAY FROM HIM!!" I jumped over Izuku and swung as hard as I could using my quirk: Pulsation-5 Inches, and punched the creature in the face. It's beak was harder than I expected when it caused a gash below all my knuckles. It flew back several yards with Tomura unfortunately jumping out of the way just in time.

"What the hell??" Tomura growled, looking back at the creature getting up from the ground. "How did you do that to my Nomu?"

I stood and flicked my hand from the extra blood leaking from my hand. Adrenaline still coursed through me. 

"I don't know what you mean. I just came to give him a love tap. And here I thought you knew me." I chuckled. 

 (Izuku's P.O.V)

I watched in shock as Y/n stood before me, covered in so much blood. Though I couldn't help wonder, how did she stop the Nomu? And that power! Mr. Aizawa couldn't stop him! But he has been fighting for a long while. Yet, I still don't know what she's been doing before now either. Depending on the blood all over her, it wasn't anything good.

Suddenly the door at the main entrance of the facility busted open. And their stood All Might. The Hero of Peace. Smiling in the face of every type of danger and evil there is. But this time, he wasn't smiling.