Yandere Mirio X Female Reader

NARRATION

"There she is." Mirio sighed looking at Y/n.

Mirio has been obsessed with her since the day he learned about her. She basically has the same quirk as him, yet it seems she's better at using it. Her clothes don't fall off and such. Though that's not the only reason, he feels like she's meant for him and only him. Like they were made for each other.

"Oh, hey!" Y/n waved and Mirio frowned. It was Midoriya, he's always around her, it's annoying. There has to be a way to get him away from her long enough so he can do... something.

Mirio left the two alone to plan out what he needs to do. If he can figure out what that is.

TIME SKIP

"Wow, that's so cool!" Y/n said as Midoriya smiled "Thanks Y/n! A lot have seen me do it, but not many are in much awe." He winced clenching his broken finger.

"You should get that healed." Y/n said pointing at the finger. Midoriya nodded and walked off, waving at Y/n as she waved back.

Y/n turned around but jumped back a lil seeing Mirio right in front of her. "Mirio, my goodness you scared me." She breathed holding her chest. Mirio looked to the side with a slight blush "Uh, Y/n, I've been meaning to ask you." He said as she tilted her head "I've been meaning to ask you..." he trailed off.

"Yes?" She said with a smile as he leaned back "I've been meaning to ask you, can you teach me how to... do the things you do with your quirk?" He asked. "Huh?" She said with wide eyes "Mirio, I'm the one you should be asking for questions on how to use the quirk. You seem better at it then me!" She said as he frowned. "D-Don't try to down play yourself! I've seen what you do, and it's even better than I do." He said grabbing her shoulders.

Y/n looked surprise in this sudden event "I've heard you say you can see, and you don't feel like your falling! More importantly, your clothes don't fall off!"

Y/n face flushed red as she looked away "W-Well, that's how I use it. That's all I can do, I can't use it in the way you do." She said jumping as Mirio tightens his grip on her "Then we can learn from each other, I can teach you how I use it and you can teach me how you use it!" He said loudly. Y/n scratched her cheek "I-I guess, but what good would my input do for you?" She asked as Mirio shook her "A lot! It would do a lot, then... then I..." Mirio blushed, let go of Y/n and left "I'll meet you in a while, please be there Y/n!" He said as she nodded. "O-Okay." She muttered.

After a while Y/n sat in the area Mirio implied. As it was the only area she's been with Mirio in. "Y/n?" Looking to her side, Y/n sees Midoriya waving at her. "Oh, hey! How's your finger?" She asked pointing to his finger Midoriya patted his head "Aha, I got scolded for using my quirk for no real reason." Y/n giggled.

"So, who are you waiting for?" He asked sitting next to Y/n "Ah, I'm waiting for Mirio. I'm guessing since we have the same quirk basically, he wants to exchange tips on how we use it. I don't really know how Mirio uses it, so it'll be great!" She said as Midoriya nodded. "That's cool! Do you mind if I watch the two of you, it'll be great information to learn!" He laughed as Y/n nodded. "Sure!" She said and looked down "Actually, I was scared to come here." She said as Midoriya tilted his head.

"Why's that?" He asked as she looked at him "Well, I've gotten this weird vibe off of Mirio anytime I'm around him, and it's been a weird vibe that I've felt before. Almost like he watches me, even when I'm talking to someone else, specifically boys that feeling arises. Just like now." She shivered.

Midoriya placed his hand on Y/n's shoulder "Don't worry, I'm sure Mirio won't do anything bad, he's a good guy." He laughed trying to reassure Y/n. Which she nearly was but that quickly went away as she saw a hand emerge out of the wall they were sitting on, grab Midoriya by the face and slam it into the wall. "Midoriya!" Y/n screamed checking on him. Midoriya stood up and rubbed his head seeing it covered in blood "Ow, who di-" Midoriya faceplanted into the ground.

Y/n looked down seeing Midoriya has his foot grabbed from the same wall by an arm that quickly retracted into the wall. Midoriya stood up trying to balance himself and stop the blood from coming out his nose and head. "What was that?" He winced as Y/n shook her head "I don't know, why would anybody-"

"That first attack was supposed to kill you!" Midoriya and Y/n looked towards the sound and saw Mirio with a scary look on his face. "Mirio what are yo-"

"Don't talk Y/n!" He shouted then pointed at Midoriya "You!" He shouted "You've been around Y/n repeatedly and too much, I'm not letting you take her from me!" His said as the two looked at him in confusion "Mirio what are you talking about? Midoriya is my friend and I don't like him like that and he doesn't like me like that, what the hell are you-"

"Don't lie to me!" He shouted "I've seen the way you hang out with each other, and it's not normal!"

"Mirio, what the hell are you going on about?! Go away, I don't like you like that either, and I never will after what you did to my friend!" Y/n shouted noticing Mirio looked hurt. She frowned and helped Midoriya up "Y-You... how could you say something like that, Y/n?!" He shouted as she looked at him with a scowl "How? What the hell do you mean how? You just tried to kill my friend, and your supposed to be a hero, how tf am I gonna be attracted to someone who does that!?"

Mirio held his hands out "B-But we are meant to be together, Y/n." He said shakily "We basically have the same quirk, and we nearly come from the same background as each other. Don't you see? We were made for each other! We were meant to be!"

"Like hell we were!" She said walking off with Midoriya. Leaving Mirio as tears started to leave his eyes.

TIME SKIP

"Are you okay?" Y/n asked looking at Midoriya. He nodded and she sighed "I don't get it, that... that..." Y/n stuttered.

"That was nothing like Mirio, right?" Midoriya said finishing her sentence "Yeah! I don't get it, what's hit problem, he tried to kill you!" Y/n exclaimed as he nodded "Yeah, the staff said they were going to have a talk with him. They don't want to expel him, but with the situation at hand they might." Midoriya sighed along with Y/n "That might actually be good, or I might have to leave the school."

"Huh, why would you say that?!" Midoriya jerked up, only to flinch at the pain in his head. "I think this weird behavior he's omitting is because of me. You said it yourself a few weeks after I came to the school, he became weird right?"

Midoriya nodded "I guess so."

Y/n quickly hugged Midoriya and he returned it. "You're a great friend Midoriya." She said as he laughed "I keep telling you to call me Deku. Midoriya is too formal." He said making her giggle.

Y/n left Midoriya to recover.

A few hours passed as Midoriya tried to recover. Mirio really did that much damage with just two hits, wow. "I'm glad he didn't get to finish the job." Midoriya said to himself "If he did, I wouldn't be here now. I also wouldn't get to have a good friend like Y/n to watch out for me like the others, but she does it different. Almost sibling like." He said smiling to himself.

Midoriya closed his eyes, trying to sleep the recovery time away. He calmed his breathing and turned every noise out.

That was quickly interrupted by a hand covering his face. Midoriya opened his eyes to see it emerging from the wall. "This time, I'll finish you for good!" Midoriya heard a voice, his voice.

"Plus..." the grip tightened on his face. Midoriya tried to move but he couldn't, what's happening?! "Ultra!" Midoriya felt his head sink back against the bed and then crack.

WITH Y/N

Y/n leaner against the wall outside the school. "I should leave. Mirio has been here longer than me, it wouldn't be right, but he just tried to kill a fellow student for no real reason!" Y/n closed her eyes and hugged herself "I wish I had someone else to talk to, someone to hold me and say it's alright." She said sadly "This entire thing is too much."

Y/n felt strong arms wrap around her waist, but...

Y/n jumped and turned to the wall to see Mirio emerging from it. "Y/n it's alri-"

"No it's not alright, go away Mirio!" She interrupted him."W-Why are you treating me like this? I'm doing everything thing for you, I'm giving my all, Y/n please. I even took Midoriya out of the equation, so now it's just us." He said motioning to himself. Her eyes widen, what did he mean by that? Did he? Oh god...

Y/n pivoted on her heel and ran, only for Mirio to grab her by her foot, she used her quirk to free herself, kicking Mirio in the face in the process. Though she didn't make it far, falling to the floor in the process. She shook as she felt something wrong with her leg, the leg Mirio grabbed. She ran her hand over it, finding a out of place bump, he put something in her, the one thing she can't go through. She was in such a panic when he grabbed her leg, she didn't feel it when she phased through his hand.

"See, I did that so you can't run. Now, we can actually be together." Mirio said crouching next to her clearing his bloody nose. "I'm going to take you to a special place, but, I'm going to need to be asleep." Mirio raised his fist and everything went black for Y/n.

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Haha, hoped you like. I might go a lil farther next time. Not as a continuation though, I'm not that very knowledgeable on Mirio. I've only heard things here and there in school and when ever I'm able to go to a friend's house, which isn't common.

So if you have info on him, please fill me in so I can write a better and believable version of him. See you!

-KingDonte