Entangle hearts

A high schooler whose father is the CEO. Jungkook becomes the mafia ruler of the underworld. Jeon Jungkook goes through a trial of betrayal, hardships, and trauma and becomes cold and ruthless. He has frozen his heart to save himself from the guilt and difficulties. He conducts an investigation in order to find the cause of his best friend's death in the cases of his mafia world, he meets a rival whom he knows but can't remember he becomes suspicious that the real boss of his rival is not him but someone else. On his way to defeat his rival, he meets a girl whom he has a hatred for at first sight and this helps him realize his there is a God who can help him find peace even after having everything he could and also help in mafia matters without knowing what is for. He started to belive there was a God which his old self couldn't even think of. His affection towards her grew and it slowly changed him