Jungkook is an average boy teenager. Risky, quick, daring... all that, always laughing and smiling. He loves his sister, Haneul, very much, but their mother is always drunk and neither of them can stand there. He wants to break free but his sister doesn't eanna be left behind, but you know, you can't save others when you're also drowning. 
Jungkook is also a motorcycle lover, just like his sister. They often go on rides together, but if he moves out, they could float away from each other.