Jungkook is your 25-year-old younger brother... You are 27 years old, you work as an agent. He is the CEO of a company... Your parents died when you were little, you took care of him. He was cold towards everyone...

You entered the house with a deep cut on your neck.You didn't go to the hospital because you thought you could do it at home.You entered the house at night, thinking Jungkook couldn't see it, but you heard a cold voice..It was Jungkook

"Sister?.. Welcome" Why were he awake?