CROSSOVER!
°Yandere! Izuku Midoriya X Reader X Yandere! Nagisa Shiota°
~♡~

"Oh- Nagisa!!" You shouted, grabbing the boy's attention who currently roamed the sidewalks.

Although he looked to be in deep ponder, you simply wanted to greet your friend.

It was in the midst of summertime and many of your friends were either busy, stuck somewhere else, or simply didn't want to hang out with you.

Nagisa and Midoriya, however; spent lots of his time with you when you needed it. They was there whenever you needed someone to lean on, or talk to. Somehow though, it gave you an eerie feeling, but you had tend to ignore your gut feelings.

"How are you doing today?" You asked, peering down towards the white grocery bag he held. "And what do you have in there?"

Nagisa remained silent for quite some time, his cheeks flushed while his muscles squeezed out of nervousness.

"Oh-" He spoke, visibly snapping in back into reality. "This?" He lifted the bag, before lowering it with a firm hold. "It's.. uh.. a secret." His smile provided as a mask over his anxiousness, while he moved the bag behind his back discretely. You thought his actions were strange; especially for a character such as himself. But being considerate and respectful, you decided not to pay any mind about it.

Nagisa thought to have disappointed you in some shape or form, and had ended up frantically shifting. "I'm sorry that I can't tell you, [Y/N]! It's... something that only I have to know about." He reassured intently. You shook your head, fanning your hand gingerly. "Don't sweat it, Nagisa! Hey, wanna walk together? Where are you headed?"

He suddenly went silent.

"I was..." His gaze shifted nervously. "I was going home..." He replied softly, sounding as though he didn't want to be heard at all. You sheepishly smiled, before pivoting your heel. "You live this way, right? Well come on, don't wanna beat you to your own house!" During your sentence, you began walking, now on your way to Nagisa's residence.

Quickly, he followed you, gaining up rather quickly. Nagisa's heart pounded after every step he took. It wasn't because he was in your presence, nor was it due to fantasizing about future events that could potentially occur.

He was hiding something extremely important from you. It was so reprehensible that you wouldn't even be able to view him as the same person you knew and love.

He obviously didn't want to lose you.

'I'll have to stay calm for now... Make it look as though I'm completely fine...' Nagisa thought as he smiled and nodded occasionally as you began chatting, frequently looking over towards him to finalize if he was listening to your conversation or not.

But as soon as you looked away, his smile faded, and his lips tugged into a frown. 'When we get to my place... I'll have to...'

You then looked up with the most adorable smile, however it quickly contorted, and frantically, you looked back at him, who was still lost in momentary thought.

'I'll have to hide everything quickly! Luckily, the b-'

"Nagisa!! Look out!"

He heard a shout ring through his ears, earning his attention. Seconds later, he felt brute pressure apply itself against his chest.

His azure hues landed on you, who he spotted shoving him away from yourself for his protection.

Nagisa looked frightened yet confused at the same time. He eventually collapsed against the sidewalk, the bag still in his grasp. But during his fall, a few items such as tape and matches fell out, causing Nagisa's heart to drop. He swiftly shoved the items back and looked up at you, whom was currently speechless. "Oh god..." You whispered.

Nagisa's mind then went completely blank. You held a look of both worry and terror, as your eyes seemingly laid upon him. He felt his throat go dry.

'Did she see that?'

'Does she think I'm weird?'

'Can she figure out what I'm up to?'

'I don't think she noticed.'

'It's only matches and tape!!'

'She doesn't know a thing!'

'She doesn't know.'

'She doesn't know.'

'She doesn't know.'

'She doesn't know.'

'She doesn't know.'

'She doesn't kn--'

You lifted up your index finger and pointed toward something on the floor, shattered into a million pieces. Nagisa followed your hand with his eyes, staring towards the object in great dismay. His heart rate steadied, however not enough. The sight in front of him was also nerve-wrecking, and left him on edge.

A broken clay pot, full of bricks.

Part of him was relieved, though. At least you didn't see anything rather off. Nagisa stood up and brushed off his clothes, staring towards the mess as you looked up towards the buildings above the both of you.

"Where on earth did that come from?.. I didn't see anyone up there...."

Meanwhile, the boy with blue hair furrowed his eyebrows and squinted his eyes, coming to notice something peculiar within the debris. While you were distracted, he had approached the shards and crouched down, carefully maneuvering his hand through. He felt his hand touch a familiar, smooth object, and once he attained it; quietly he slithered it out, his interest at it's peak.

A thin strip of paper.

Nagisa wiped a bit of dirt off of it and blinked, reading the letters against the paper leisurely.

"Stay away from [Y/N], or next time... I won't miss."

His heart thudded by this message. Was it from excitement, or concern? One could say it ought to be fear, however that twisted cracked grin he discretely held spoke otherwise. 'Is.. this a threat, meant for me...?' By the time you finished examining above, the boy had already shoved the note into his pocket, urging for you to follow. "[Y/N], let's go.. I don't uh, want to stay here any more." He told you genuinely, immediately expecting you to reply affirmatively. "Yeah, I completely understand. Let's hurry before more pots fall from the sky..."

"Here we are." Nagisa spoke, stopping right in front of the building. With one hand remained in his pocket, he watched your eyes glisten. "Your house is so friggen' huge! Bigger than mine, at least!! Is your mom home?" You asked. Nagisa shook his head, eventually clearing his throat.

"..N-No... it's just us. Are you okay with that?" He secretly hoped you wouldn't mind at all. Although previously he had no fantasy about the two of you being alone in his home, thoughts now began to clash within his mind, causing his cheeks to rise in a pink color.

"Excuse me-"

A figure moved in between you, attempting to cause the both of you to gain some distance between one another. You moved back as the figure russled his hand through his green, frizzy hair with dark shadows, scratching his scalp gently, in hopes hoping that you'd recognize him. "I know that voice! Izuku? Is that you?"

The boy facing away from you turned slowly, his expression ultimately full of nervousness. His cheeks flamed red immediately, glad to know that you were able to recognize him. "O-Oh! [Y/N]!!" He exclaimed, his body stiffening.

Midoriya smiled shortly after, pivoting his gaze towards Nagisa, who was just a bit shorter than him. His emerald green hues glinted with insanity, as well as dismay. It was obvious that he detested Nagisa, however hadn't expressed it. Not yet.

"So, Izuku, what are you doing here?" You asked him, causing him to break the sudden glare he laid upon the other male, whom; felt slight pressure within the atmosphere. "I.. I was just walking around.." He gestured.

Nagisa shifted his gaze elsewhere, while a sickening feeling arose in his stomach. The two of them shared the same loathe for one another, and hadn't even realized they were also one in the same. Nagisa moved his hand to fiddle with his bangs, moving them to his discretion. Even if Midoriya made up a debatable reason.. he still wasn't convinced.

"Last time I checked, you don't live here, Midoriya." Nagisa chuckled, stirring up more tension. You cooed right before nodding. "Ah! He's completely right!" You then started to nudge him. "What is it, are you secretly seeing someone? Like Uraraka?"

Giggles came from you, and the brief contact forced Midoriya into an moment of awe due to your attempt to tease him. He shook his head calmly, and stroked the back of his neck. "No.. I was actually... here to see someone else, be-believe it or not!"

Nagisa's eyelids lowered in skeptic glance.

He stared at him.

But after a while, Nagisa felt himself roll his eyes, and he approached his door, parting his lips to speak. "Let's hurry and go inside, [Y/N]." He spoke out to you, urging you to drop the current subject you had with Midoriya. "Okay, but could Izuku come in with us? He's fun to be around, I promise." You plead-fully insisted, giving him puppy eyes. Meanwhile beside you, Midoriya stared at Nagisa with an awkwardly warm smile, with his eyebrows furrowed.

Of course he wouldn't say no to you.

"Sure." He replied to you, turning around to face his door once more, unlocking it without further hesitation. His blue eyes watched Midoriya closely from the corner of his eyes, congregating within his mind.

'He seems extremely close to [Y/N]...'

'Should I kill him?'

'It's for the greater good, right?'

'I'm an assassin after all..'

Nagisa allowed the both of you to enter, closing and locking the door behind him. "It's very clean!" You stared in awe, your eyes examining the scenery with slight admiration. Nagisa awkwardly chuckled, his cheeks a coated red. "Thanks." He afterwards crouched down to untie his shoes, delicately loosening the laces, all while unaware of Midoriya's glare. Once he was finished, he then stood up and pointed towards down the hallway.

"I need to go take care of something, feel free to make yourselves at home, the bathrooms are down there, right at the end, if you need to go." He told the both of you, walking away shortly after his brief message. By the time you looked towards your friend with fuzzy green, unkempt hair, he was in the midst of standing. But during his movements, you spotted him shoving something into his pocket.

Curious to what it was, you were on the verge of asking him, however he spoke before you. "[Y/N], I'm going to the restroom. I'll be back as quickly as I can, alright?" You nodded instinctively, your lips pursed. Midoriya had followed behind Nagisa rather quietly.

"And suddenly I'm all alone..." You whispered in gloom, eventually lowering your eyes. "Huh?--"

You noticed Nagisa's left shoestrings had been removed. And with curled eyebrows, you were quite confused, however started to ponder about the possibility that Nagisa deliberately removed it for whichever reason. "Ah, well.." You muttered, shifting over and onto the couches.

"Why are these... so heavy?..." Nagisa asked aloud, dragging what looked to be a black bag across the bedroom floor. He turned his head away and pulled, gradually growing closer to his bedroom closet. Shoving aside all of his clothing and hangers, he forced the bag inside upwards, leaning it against the wall.

What was in that bag was a body.

Karma Akabane's body.

He wiped the sweat from his brow and while his hand lifted onto the zipper of it, he pulled it downwards swiftly, revealing Karma's lifeless gaze. Dried blood clung to his parted lower lip, and his body was as cold as stone.

Nagisa held an deepened frown, in grief about murdering his own childhood friend. "Karma... I'm sorry...." He slouched, reminiscing on the past. "I had to do it.. You wouldn't listen to me at all..."

Shrouded in guilt, part of Nagisa couldn't help but feel satisfied. He clenched his teeth tightly, as his breathing became shallow. "I warned you, Karma! You should've... You should've listened to me.. I didn't want to-"

Errreeek.

The noise of an opening door harbored his attention, and the male swiftly turned, prepared to face whoever it was. However he was too slow.

His eyes immediately widened, feeling something thin wrap tightly around his throat. He was then quickly yanked back and onto the floor, collapsing against the body of another being. "Ugh-!"

The figure's legs interlocked with his own, preventing him from using them to his advantage. Nagisa pulled on the intruder's arms, struggling frantically. But doing this only caused the other's hold on him to tighten.

His eyes then shifted downwards and noticed white shoelaces bonded around his neck. The string looked oddly familiar, however he had no time to dwell on whose it belonged to. Rather; he wanted to know the identity of his attacker.

"I warned you, didn't I..?"

The male with blue hair nearly couldn't recognized that monotonic, empty tone, but within the few seconds he instantly remembered the face in which it belonged to. His teeth remained clenched, and saliva slipped from his mouth. "M..Mi..do..riy..a? Tha..t wa..s-" He choked out, his vision gradually growing hazy.

He couldn't breathe.

He couldn't breathe.

He couldn't breathe.

He couldn't breathe.

He couldn't breathe.

And within a blink of an eye, his mind became frantic.

Midoriya waited. He waited eagerly and patiently, his green orbs engrossed in blood lust which demanded to be satisfied. "I gave you a simple warning!" Midoriya slithered from underneath him, pushing himself over towards the bedside while dragging Nagisa with him. At this point, the boy nearing death's door could not speak.

As he was being dragged, his hand felt along the floor, gagging and wheezing, searching in desperate attempts for a last resort. Midoriya hummed lowly, wrapping the shoelace around the bedside's wooden pole. "Nagisa Shiota... I really did like you... y'know? We had something in common..." Midoriya started, removing black gloves from his pockets. His eyelids remained lowered and his eyes were harsh and unforgiving.

"We were going to do whatever it takes to have [Y/N] to ourselves."

He slipped the gloves on carefully while moving to hover over Nagisa who laid in horror, writhing in agony. Midoriya moved one hand into his pocket once more, revealing a sharp, yet short blade, thirsty to be coated in blood.

"...At least you'll see Karma in hell.." The boy with unkempt hair remained above him, and positioned the blade to meet his optimum standards, not wasting a mere second. He forced the knife downwards, unable to witness Nagisa's hand which slid underneath his bed, still searching for any objects.

His eyes then widened.

A brute impale dug deeply into his stomach, and immediately the other coughed up blood, however his will outweighed his pain. 'I can't.. die yet...!' Nagisa thought, smuggling every ounce of strength he had left into one last attack. Swiftly, a small mallet swung towards Midoriya's head with quite a force, causing him to shout in pain.

He collapsed backwards as the weapon he previously held fell just beside his adversary, and Nagisa used this prime opportunity to his advantage.

Using his heel, he brought the knife beside his hand and grabbed onto it with an tight grip, hurriedly slicing the strings from around his neck.

Midoriya groaned as he pressed his hand against the blood seeping through an spot overlapped by his green locks, and looked up to lock his gaze with blue hues.

Nagisa coughed violently, struggling to control his erratic breathing, but he managed to compose himself only to stagger towards Izuku, the knife still in his grasp.

"You... al..almost... had me..."

He whispered, proceeding with slow steps. His vision was stuck in a blur, but this didn't keep him from advancing. While he approached, Izuku rose up and lifted up the mallet that managed to glide beside him, his eyes determined and contempt.

"Nagisa? I'm hearing a lot of noises in here, and Izuku hasn't come out of the bathroom yet...."

A feminine voice was heard, and the men immediately turned their heads. Their hearts had nearly dropped out of their chests in witness to your expression. Your body became paralyzed in that moment, and your face was written in terror. "Wh-What are you two doing?!!" You asked, slowly entering. Midoriya suddenly staggered forward towards you, and so did Nagisa.

"[Y-Y/N]... Midoriya attacked me first! I was only acting out of self def-"

"Nagisa has a dead body in his closet, [Y/N], we have to call the police!!"

The boy with green hair spoke, attempting to convince you. He grabbed onto your forearm and tugged you away and towards the doorway, only to be stopped partway through.

Nagisa grasped firmly onto your hand, after dropping the knife he held. His expression was extremely pained, and he winced as his other hand applied pressure to his wound on his abdomen.

"Let go of her."

"You let go of her..!"

"Damn it, leave us alone already! You've interfered enough!!"

"Says the one who stalked her until you got to my house?! I'm not stupid, Midoriya!"

You remained phased, as the men continuously pulled at your limbs, making you feel as though you were a scale frequently losing it's balance. They were talking about death as well as stalking so casually; as if it were an ordinary conversation, completely normal. "I..-- Bodies??" You couldn't keep up with their words. Right now, you were concerned about why they were tearing at each other throats. You thought they were friends.

During your contemplation, you couldn't help but notice their eyes. They looked alike.

...

It was clouded with delusional insanity.

That's what it was. They were delusional; placed under the impression that you harbored more affection than the other. This realization was more than what you desired to know.

Midoriya growled towards Nagisa and looked at you before he started speaking, however you could no longer hear what escaped through his lips.

'Should I run away?'

'What should I do?'

'My phone is on the couch.'

'I can call the police department.'

'They're crazy.'

You sweat felt roll down your cheeks. What were you planning to do next? Would they let you leave, nonetheless live if you tried to run away?

Misfortune sure has a thing for you.

♡