What Should I Do If My Crazy Brother Loves Me Too Much?

This is the last world to travel through. As an excellent time travel raider, Su Wan was thrown into a world of treachery by a suspicious system - who is the scariest treacherous person, or the male protagonist? She assumes the identity of her original illegitimate daughter, and her main mission is to prevent the male protagonist and the female protagonist from falling in love, and to prevent the male protagonist from destroying the world. How to stop it? The system pondered for a while: First, change the heroine to someone else? Secondly, use love to influence this handsome but gloomy brother... Su Wan: Isn't this right? ! System, get out of here! System: Lost contact... As they gradually got along, Su Wan had doubts about this tricky brother. She seemed to know him. And it seems that before traveling to this world to influence him... The truth is complicated and confusing, and the more we get along with the demonized world, the more familiar the strange brother becomes. Was this last time-travel an unexpected and natural development, or was it premeditated in some plans?