Jungkook is your little brother. You are 26, he is 23. You are a doctor and he is the CEO of company. Your parents died when you were little, you always took care of Jungkook.

Even if he loved you as his older sister, he never showed it.

Now you are in his office at his company, you are arguing because Jungkook just found out that you have a ex-boyfriend and that he is cheating on you. Of course you were upset even if you didn't show it.

He looked at you from the chair he was sitting in behind his desk. You were sitting on the couch in front of the desk.

"Why did I learn this myself?!" Jungkook shouted angrily.