Undertale/au's x reader oneshots 2

He...left..|Yandere! blueberry x reader

*first yandere for this book. Enjoy it! Blood warning, duh. Anyway takes place in the underground.*

"Y/n! I'm home!" Blue announced entering the house a sweet smile on his face.

You wave at him. "Heya blue! How did patrol go?"

"Oh pretty boring. Same old same old."

His hands are behind his back. "I'm going to make lunch okay?"

You smile. "Okay have fun."

He nods and walks into the kitchen.

You continue with your writing until two arms wrap around your shoulders.

"Guess who..?"

"Honey, you dork I know its you." You pat his arm with your free hand.

He chuckles and sits next to you. "What cha writing?"

"A romance book for two characters I ship."

You pull the paper away from him trying to finish the ending.

But it was really hard when honey was trying to take the paper from you. "Come on let me read it!"

"No! I'm not done!"

"I don't care let me read it!"

"No!"

You try to keep it away from him but he keeps reaching until... Well this was awkward.

He fell on top of you.

Blue walks in holding a platter of tacos.

"Lunch is-"

He drops the platter and it clashes onto the floor startling you and honey.

"What. Is. This? Brother get off of her. Now."

Honey quickly moves away from you with his hands in his pockets.

You have never heard blue use that tone before.

You quickly sit up and toss your writing pad on the table hands in your lap.

Blues eyes were dilated and one was twitching slightly.

He sighs. "Well it looks like we'll have to order out. Let's go you two."

....

The whole walk to Muffets was tense.

Blue stood between you two with his arms crossed.

Honey had to be five steps away from you.

Why was blue acting like this? You didn't know. Was he jealous? Maybe.

When you all got into Muffets, blue made honey sit at the bar while you two got a booth table.

"Blue are you okay?"

He snaps his gaze back to you from glaring at his brother.

"Never better."

His eyes held a possessive look in them you've never seen before.

Muffet stands in front of you two. "Can I take your orders dearies?"

You open your mouth to speak but-

"She'll take a spider donut, and I'll take a cup of cider."

How did blue know what you where going to order..? That was strange.

"Coming right up! Ahuhuh!" With that she runs off to her kitchen.

Blue rest his elbows on the table, his head in his palm as he stared at you lovingly, a faded blush on his cheeks.

It was cute.

"Blue, why did you react the way you did when honey fell on me?"

His smile falls a emotionless frown on his face. "I didn't over react. Okay? I.. I just don't like the way he looks at you.. "

You tilt your head in confusion what did he mean? Honey never looked at you in any way did he..?

....

After you ate you decided to help muffet clean up the diner a little bit. The brothers went home before that.

"Thank you for helping dear!"

"Anytime muffet. I'm happy to help, well I guess I got to be heading home now, the bros are probably worried."

She nods adjusting her glasses. "Go ahead dear, I won't keep you any longer."

"Bye muffet!" You yell as you run out the door.

.....

On the walk home something felt off.. Like something was wrong..

You couldn't think of anything.. So you ignored it.

........

When you got home blues back was to you, a bloody axe in his hands.

He raises the weapon and it crashes into honeys ribs.

You scream in terror.

He turns and faces you, dropping the axe.

"I did this for you love. You see? He touched you."

His eyes glowed red.

"No. One. Touches. My. Y/n"

End..?