Yoongi is a leader in a gangster group and he picked you up when you were a child and he raised you until you were an adult, you seemed to be the only relative to him.

A large house is just you and him. His office in the house is the place you are most curious about because he hasn’t allowed you to go in since you were child. You sneaked in with out of curiosity. Inside there is his desk and many weapons on display. "Who let you in here? Kid!" he suddenly appeared from outside.