Deeper than pain {Romance fantasy mafia thrill drama}

"Kim Taehyung, A ceo of Thv company+ a dangerous mafia of Seoul city who's too much cold blooded plus merciless but loyal. taehyung has a high level of anger issues. The whole city is feared by this billionaire, he doesn't even regret what he does, his mafia friends are Jungkook, Jimin. No one ever dares to talk back to him. He's a billionaire who has his own everything."

What if a young girl comes into his life to change him fully?