They weren't blood-related, but Jiyong thought of her as his little sister. He wanted to protect her and help her throughout her problems but somehow things escalated in a different direction. He was getting possessive and protective which wasn't like a brother would for his sister.  Dara on other hand had always had a little crush on him but never realized until her friend showed some interest in pursuing him. she was jealous. 

what would be a girl's dream, if she is 25 years old, and is working a job she loves.  Jiyoo had nothing to ask as a wish on her birthday, she had everything, except one thing or a person she wanted to stop bothering her, Was, her very own dad. she would literally avoid any contact with him because that's what he had left her with. she was bored and tired of putting down his "look at these pictures", "oh this guy here is an investment banker" conversations. Every time she goes ove

Jiyong being a mafia boss was never a problem for dara; she accepted him as it is. She was happy with him beside her. Even when he would shut himself away from her and ignore her attempts to get close to him. it was hard but she never complaint, she saw him in his worst days and was with him in his weakest time; and maybe that was the cause of her being silent and adjusting with his mood swings. She knew his habits of making decisions on his own or acting dominant over things but when