My Ex's MAFIA Brother [Kim Namjoon]

Taehyung : baby, relax, i'm fine
Y/N: Relax, how do I calm myself down, who were those people and those people tried to kill you, how do I calm down
Before Taehyung can say anything, the doorbell rings.
Y/N: Who can be there at 2 in the morning,
Taehyung : go check
Y/N gets up and opens the door As Y/N opens the door, someone pushes the door so hard that she falls.
The man was in a black suit, with glasses on his eyes, and anger was clear on his face.
Big body, his wide chest was clearly visible despite the perfectly fitting suit
Y/N was still on the floor and the man with whom two other men were
The man went and sat next to Tae without looking at Y/N.
The remaining 2 men who definitely looked like bodyguards of that big chest, one of them helped Y/N.
Taehyung : Hyung, you didn't need to be here, i'm fine
Y/N: Hyung, Taehyung , do you have a brother too?
that big chest stared at Y/N
Namjoon: Who is she?
Taehyung : Hyung, she is my girlfriend
Namjoon: How did all this happen; do you recognize the attacker?
Y/N: We were walking home from a friend's party, suddenly a car stopped in front of us and two masked men started firing at us.
Namjoon: did I ask you
Y/N: what,you arrogant bast....
Taehyung : Y/N, he's my elder brother ,
Y/N: so what...I know all this must have happened because of you, someone tried to kill Taehyung to take revenge on you, tell me what have you done
Namjoon stands up and walks towards Y/N
Namjoon: Yes, you are probably right, whatever your name is,
Y/N: Y/N, Y/N is my name, you understand
Namjoon gets angry
Namjoon: Yes, I am an arrogant bastard, because I am a mafia king, you are still alive because you are my brother's girlfriend.