Requested by:someone
(World were Korekiyo's sister is alive and well)

This world was too peaceful. The world was dull, boring, lifeless. Until you came up with your brilliant idea to invent a killing game to give the world excitement.

You were famous, reveled around the world for your idea. It was your 53rd killing game so nothing was particularly new. You had to make up another plot that would make the viewers hyped.

Korekiyo, your friend, didn't like the idea of a killing game. He was the only thing even sane that you were connected to. He was one of the few that hated the killing game.

You couldn't understand why. Why would you hate something that gives people hope?

He was so desperate, he even signed up for the killing game without you knowing. Once you found out, you actually were amused.

You didn't need him to hold you back anymore.

You decided to spice things up and make him a yandere. Then he would be anxious to get back to his lover, his sister you presumed it to be.

Your assumption was wrong.

(In the Killing Game)

You sighed in satisfaction at the sight of Kirumi's execution. The second killing was successful.

You glanced over to Korekiyo, whose expression was blank.

He must be so anxious to get back to his sister by now. Eventually, his anxiousness will become madness and he will stop at nothing to get back home.

But yet you noticed nothing. Though of course he was good at hiding his emotions and he had a mask so...

"Korekiyo." You tugged on his sleeve after the execution was over.

"Yes Y/N?"

"I know this is an odd question...but d-do you have anyone you care about back home?"

He seemed hesitant to answer the question but caved quickly. "The only person I care for is my sister. Though she isn't important to me."

Your eyes widened.

Not important? What does he mean? He loved his sister! He always talked about her. Maybe he's lying. Yeah..that's it. He's just bluffing so he doesn't give away his motive. Clever.

"Ah I see. Well I hope we can all get out alive and you can return to your sister." You replied, brushing your hair back.

"Do you have anyone special to you back home Miss Y/N?" He asked inquisitively.

You instantly thought of Korekiyo himself but shook the thought away from your head.

"I have family I miss dearly. No one extra special to me back home alas." You sighed.

Korekiyo looked suspiciously satisfied by your answer.

"Do you love anyone Korekiyo?" You decided to be bold, wanting to know the answer.

"Like you, I have no one back home to love. But I have someone that is here that I have taken a liking to."

His answer caught you off guard and your jaw almost dropped. You immediately regained your poker face and thought deeply about his reply.

Here? No way. He hasn't known anyone here in his past life. Unless I didn't know. He could've loved someone else all along. Wait. The only person I can properly prove him to be with him is...me....

"Korekiyo...do you like me?" You shivered at your question. It was unscripted and unexpected. You had no idea where this was going to go.

He brushed a stray hair behind your ear. "Yes."

Your heart stopped and it wasn't just because you knew your plan was ruined.

"I-I have to go." You ran all the way back to your dorm and slammed the door.

My plan...is ruined. I can't believe it. He likes me? He was infatuated with his sister!

You sighed and slumped on your bed. "This can't be happening." You whispered to yourself.

A few minutes later you felt soft raps against the door.

"Who is it?"

"It's me." Korekiyo's voice resonated from behind the door.

Once you opened the door, he enveloped you in a warm embrace.

"You scared me, running off like that." He whispered almost seductively in your ear.

Your heart pounded insanely in your chest, like it was going to pop out any moment.

"Korekiyo. Why do you like me?"

He let go of you momentarily. "I honestly don't know. But that's what is beautiful about love. You can't control it."

"That is true." You shifted uncomfortably.

"Do you love me Y/N?"

Do I? Do I love him? I can't tell. My heart goes crazy when I am around him. When did I develop these feelings for my best friend? No. I'm the mastermind. I must go according to plan.

"I-I don't. I'm sorry Korekiyo. You're a really great friend and I would like it to stay that way."

His expression was surprisingly calm.

"It's okay Y/N. Just remember, I'll always love you."  His words almost sounded like a threat as he left.

A few days later......

Everything was looking like it was going according to plan, but you were wary.

You haven't seen Korekiyo in a while and it was worrying you.

What is he up to?

It was the end of the day and you snuck into the mastermind's lair from the girl's bathroom.

You were twice as careful today, seeing as Korekiyo was nowhere to be found.

You still couldn't prevent the inevitable.

You suddenly felt something cold on your neck and someone's arms wrapped around you.

It was a blade, threateningly digging into your neck.

You struggled but it was no use. The person's grip was too tight.

You knew who it was the second you felt the cold sharp metal against your neck.

"K-Korekiyo?" You breathed out.

"Yes, my love?" He instantly responded.

"L-let me go."

"I'm sorry Y/N. But I can't. I love you too much to let you go."

"Please..." you rasped.

"You know, it really surprised me when I caught you sneaking around. I would never have guessed that you were the mastermind."

You gulped nervously, shaking from fear.

"It's odd. This news should make me concerned. But it doesn't. It actually makes you so much more attractive." He whispered the last sentence in your ear.

Shivers ran down your spine.

You hated to admit it. But you have always loved this man. You never wanted to realize it because it would get in the way of your goals. You loved him, but not the man you created him to be in this game.

You instantly regretted ever putting him in the game.

"I'm sorry. I'm so sorry Korekiyo. I never should've put you in this killing game. I should've realized my feelings from the start. I shouldn't have ever pushed them away like I did. Now look at what I created, a monster who can't give up his love. I did this. I'm sorry.

Silence.

Something in him must've clicked because he let you go, a surprised expression on his face.

You used this time to run out of there, heading to your dorm.

Tears streamed down your face.

"Y/N? What's wrong? What happened?" Saihara asked as you ran past him.

You stopped and grasped his shoulders. "Korekiyo. Almost. Killed. Me." You rasped, almost collapsing onto him.

"What the-come on. Let's get you somewhere safe."

He had brung you to the lunchroom, where Kaito and Ouma were.

"Y/N! Saihara! Wassup?"

"No time Ouma! Korekiyo almost killed Y/N!"

"What the h*ll? Is this true Y/N?"

You only nodded, exhausted.

"He's going to come after everyone." You breathed.

"What? Why the heck would he do that?"

"Because he's a yandere." You replied.

"A yandere? How would you know?"

"I used to be childhood friends with him. He doesn't remember now, of course."

"That means he's dangerous, we got to find Maki." Kaito panicked, unsure of where to go.

Suddenly, the doors slammed open.

Gonta stood there, a dead Iruma in his hands.

"K-Korekiyo.....did.....this." He sobbed, his knees falling to the floor.

"Eh. I never really liked her." Ouma brashly stated.

"This. Is madness." Saihara whispered, shaking.

"He...tried....to kill me....but I escaped and....sob*....made a run for it with Iruma." He broke down crying.

"Come on. Let's go find Maki." Kaito declared. "She's our only hope."

"You don't need to find her. I'm right here." Like a beacon of hope, Maki and Yumeno stepped into the room.

"He almost killed me." Yumeno said. "But Maki came to my rescue! Like-Magic!"

"Korekiyo is going mad out there. We have to stop him." Maki said.

"She's right. We have to-"

Suddenly but not suprisingly, Korekiyo appeared at the entrance, holding a bloody knife in his grasp.

"You should have never left me Y/N. Just because I love you much, I'll kill everyone in this game for you."

Maki stepped forward, holding a katana in her hand. "You will not hurt anyone."

In a blink of an eye, she moved toward Korekiyo, slashing him with her sword.

He dodged and threw the knife at her eye, causing her to scream in pain.

"Maki!" Kaito shouted.

Korekiyo used that time to stab her with a hidden dagger in his boot.

"Who else wants to challenge me?" He spat.

And one by one, you saw your friends fall. Even Gonta, who you could tell didn't want to hurt him. He still put up his best effort trying to protect you, using his brute strength. But Korekiyo was smarter, dodging his attacks and slowly weakening him.

He screamed in agony as the knife pierced right where his heart was.

He collapsed to the floor, the last to die.

You stood there in true horror.

Never in your life would you have been shocked at death. Or even fearful.

But there he was, the man you loved, brutally murdering everyone.

I should have listened to him. Before it was too late.

"How....how did you kill everyone?" Was all you managed to get out.

"You created me Y/N. You tell me." He smirked, wiping the blood off his knife.

"B-but maki. And Gonta!"

"You created me to be smart and cunning. That will trump any brawn that comes my way." He stated.

"Please. I didn't want this."

"Then you should have listened to me. You should've heeded my warning about this killing game."

"You remember?"

"Of course I do. Ever since you apologized I remembered our past. I still love you just the same. I want you Y/N. Let's get out of here. Make a brand new start."

The offer would have sounded tempting, yet his eyes were full of lust and darkness.

You stood up, aware of all your mistakes.

You walked towards him, smiling, arms open.

He smiled too, opening his arms.

He loved you.

Too much.

He opened his mouth in horror as you stabbed him, right in the heart.

"You are right Korekiyo. Or should I say you were right. I never should have participated in this killing game. Now, I shall end it. I don't expect people to forgive me, but it's okay." You poised the knife at your chest. "I'll end this killing game."

"Right at the heart."