Attack on Titan One-Shots {Requests CLOSED}

Be with me only~ Yandere!Armin x Reader

You were eating with Armin, Eren, and Mikasa. Taking a bite out of your potato, you listened to Armin tell you about the world outside with seas and sand.

"(y/n), I forgot to tell you. Corporal Levi wants us to clean his office. I'm not sure why you have to, but I know he doesn't like me." Eren told you.

"Oh, alright. Thanks." You finished your food. "I'm going to practice."

"I'll come, too." Eren got up.

"Eren--" Mikasa began.

"Mikasa, it's fine. I can go. Stop baby-ing me, okay? Stay here with Armin." He followed you out the door.

Armin's hands balled into fists. "I see how it is." He said under his breath.

"Armin, are you alright?" Mikasa asked, seeing his fists.

"Yes." Armin got up and left, feeling sick inside. Why would his best friend take you away? You. The girl of his dreams. He slammed the door once he got to his room. "That Jeager! Always messing everything up! I liked (y/n) first and he steals her?! But, of course she doesn't realize it! She's mine!"

Armin looked at the blades from his three-dimensional manuver gear. "No. . . Yes. . . Yes. He will pay and then she'll be mine. It will be perfect. Plus, he was never my best friend. Best friends don't steal your love!"

--

Armin saw Eren walking towards the mess hall. "Hey, Eren, can I talk to you for a second? It's nothing bad. But, I'd prefer to tell you in private. You know, since we're best friends and I have to tell you something. I trust you."

"Uh, sure. Yeah." Eren nodded, following Armin towards the building. "What's up?"

Once they were inside, Armin pushed Eren against a wall. "Armin, what's going--"

"On? Just shut up, Eren." Armin put the blade near the boy's neck. "You and your feelings for (y/n) will disappear. One way or another. And let me tell you, things are not looking good for you."

"What the--"

Armin made a small cut on Eren's right cheek. "I told you to shut up. You're going to keep quiet or else I'll kill you. Got it?" Eren stayed silent. "Good. You've finally obeyed someone. What a surprise.

Now, I'll tell you why I'm acting this way. But, first, you have to sit down." Armin pushed Eren into a chair and tied him up. He also put a cloth over Eren's mouth, tying it there. "That's better. So, anyway, I've liked (y/n) for a while. I know you like her."

Eren tried talking, but it came out muffled. "What is it, Eren? Oh, wait, you can't talk. Once you're out of the picture, I will have (y/n) to myself." Armin smirked. "I can't keep you in here, can I? Someone will walk in. Then, this will be quick."

Armin brought the blade to Eren's face, stabbing it. Eren screamed, but no one was able to hear it. Armin stabbed him in the face over and over until Eren was barely alive. "Too bad you won't ever see (y/n) again. Oh and Mikasa loved you. More than a brother." With that, he stabbed Eren again and the boy's heart stopped beating.

Armin untied Eren's dead body from the chair and got rid of the cloth. He shoved the boy out of the window, cleaning the blade and his hands.

He walked towards Mikasa and when he saw her, he ran to her. "Mikasa!" He made tears appear in his eyes. "It's a-awful. E-Eren. . . I can't. . ."

"Armin. Where is he?" Mikasa was worried.

"Th-This way." He grabbed her hand and ran towards the building. Mikasa gasped, seeing Eren's body. "Mika, he-- he was like this when I saw him. I don't-- I don't want to turn over his b-body."