Yandere!BTSxReader

Yandere!Jungkook

For Lia_Kouwood
Thanks for the request and I hope you like it💙

(Y/N) was sitting in her studio, going over one of BTS' songs that she was producing, when she heard a knock on the door.
"Yes?"
"Noona, it's Jungkook. Can I come in?"
The older female smiled softly.
"Sure thing,Kookie."
The maknae walked inside,grinning and holding a plastic bag in his hand.
"Good evening Noona, I brought you some dinner."
"Thank you Kookie, that's really sweet of you. Wanna hear the songs we produced so far?"
Jungkook nodded his head and took the headphones.
After Jungkook finished listening,(Y/N) finished with her dinner.
"(Y/N)-noona, this is great! You are really talented!" Jungkook praised the older girl, with a blush forming on his cheeks.
"T-thank you Kookie, but Yoongi-oppa helped me a lot."
Jungkook had a dark glint in his eyes. Hearing his noona talk about his hyung like that, made him angry.
"Well, hyung just showed you th basics. You did all the work." Jungkook said, trying to hide the jealousy he felt towards the older member. (Y/N) smiled and ruffled the boy's hair and turned her attention back to her computer.
"Thank you Kookie, I have to return back to my work. See you later."
"Sure, see you later noona."
Jungkool walked out the room, leaving (Y/N) to finish the rest of the album.

With Jungkook...
He was happy, to say the least. Not only did he spend time with his noona, but she also touched his hair!
"Noona has really soft hands! And a beautiful smile! I want her to only smile at me... Not at Yoongi!" Jungkook gitted his teeth, not liking the idea of his noona being close to any other male, especially Min Yoongi.
"I need to get rid of him...he is in the way. Noona is mine,mine,mine..."
Jungkook continued chanting that word until he arrived in front of the practice room.
"For now I won't do anything..."
He opened the door and was greeted by the rest of the members.
"There you are. Come on,we need to start practicing."
"Alright, alright..."

Later that night,Jungkook was sitting in his room and looking at the pictures of him and (Y/N) they took together. Then he came across one,that made him smile softly. The picture was of him,when he was five and (Y/N),when she was nine.

Flashback...
Jungkook was sitting on a swing,looking down at the ground, while some boys were making fun of him.
"Hey bunny boy, why are you crying?"
"You are such a baby Jeon!"
"Why don't you go and fix your teeth instead? They look rediculous."
The boys soon ran off laughing, leaving Jungkook crying even harder.
He then felt someone pat his head.
"Are you alright?" Jungkook looked up and saw a older girl,looking at him with a nervous smile.
"N-no! Everyone is making fun of me! Why do I have ugly teeth?!"
"No you don't. Don't listen to anyone who criticise your looks,they have bigger insecurities than you think."
Jungkook looked up in confusion at the girl.
"R-really?"
"Yes. Now smile a little,ok?"
Jungkook smiled just enough for his upper teeth to show.
"See, your teeth are really cute and never listen to what other people say about them. By the way,I'm Lee (Y/N)."
"J-Jeon Jungkook. W-will you play with me?"
"Sure,let's go."

Flashback end...
"I love you a lot noona. Please never leave my side."
Out of nowhere, Jungkook started to cry, thinking about the possibility of (Y/N) not liking him and leaving him.
'I wouldn't be able to handle the fact that she loves someone more than me.'

The next day...
BTS and Twice were right now on a variety show together.
"So Jungkook, what do you think about Tzuyu? Would you date her?"
The MC asked, clearly joking, but Jungkook didn't like the question at all.
"She is a good friend... But no, I don't really do dating."
Jungkook answered,trying to sound as polite as possible.
"What about you Tzuyu?"
The Taiwanese girl blushed and laughed.
"No,we are just friends."
On the other side of the TV screen, a girl was clenching her hands.
'Why does everyone like them together... I can't let that Tzuyu have him... Jungkook's mine!'

A while later BTS arrived back to BigHit. Everyone was doing their own thing, Jungkook decided to visit (Y/N) again. While walking, he heard two familiar voices, Yoongi's and Seokjin's.
"Are you telling (Y/N) how you feel today?"
"Yes, I hope she returns my feeling's."
Jungkook heard enough. He hid behind a wall and followed the older male. Jungkook took out his pocket knife and tried to put on a fake smile.
"Hyung!"
Yoongi turned around, confused as to what he wanted now.
"Yes,Jungkook?"
"Can you come and help me. It is really urgent!"
Yoongi groaned,but nodded anyways.
"Sure,but hurry up."
Jungkook led him into a room,which was really dark.
"Jungkook,what are we doing here?"
Said boy came closer to Yoongi and showed him his pocket knife. Yoongi backed away.
"Wha-what are you doing,Jungkook? P-put that away!"
"I will not let you take my noona away..." With that,Jungkook jumped at Yoongi, knocking him down. While doing so, Yoongi's head hit the floor really hard, making him go unconscious.
"Good this will be easier for me."
Just as he was about to swing the knife down, a voice interrupted him.
"Jungkook what are you doing?"
The boy looked up and saw (Y/N),whoes eyes were wide in shock.
"I-I..."
"Were you...were you about to kill Yoongi?"
Jungkook looked down in shame and nodded.
"Yes... I-I wanted him to disappeare... So that he couldn't take you away from me..."
(Y/N) walked up to Jungkook,took the knife and kissed his forehead. He looked up in shock,only to find her smiling down at him.
"I love you too Jungkook."
"R-really?!" The boy got up and smiled at the older girl,who only nodded.
"Yes... And if I ever see you all friendly with Tzuyu again, she'll be dead. You are mine,got it?"
Jungkook only nodded with a grin and kissed her.
"I won't,I only love you!"
(Y/N) grinned,but stopped when she looked at Yoongi's unconscious body.
"We should bring him to the hospital."
"Oh, yeah you are right."

A few hours later, Yoongi woke up, but he didn't remember anything that happened.
Jungkook didn't care much about him, he had his noona all for himself.