Sunbae has a son named 'sky', sky's mother died because of giving birth to him. He loved sky so much and willing to do anything for him.

You were walking in a park when a child comes running towards you, he had fluffy hair and has a cute face. He was calling you mama, your heart soften but you explained softly that you weren't his mom, you saw an handsome guy that looks like Sunbae, the dangerous mobster. He carries the kid, he asked why did he ran away from his babysitter and he points at you, calling you mama. He knew that he liked you so he ordered his men to put you in the car

"Put him in the car. I need to talk to him."