The Reborn Grandson of a Chaebol Begins to Transform His Sister-In-Law

When I woke up, I was transported back to 1987. He also possesses the protagonist Sung Dojun in the TV series "The Grandson of the Chaebol Family" and awakens the death and rebirth system. Assi! ! ! He stopped watching the show after seeing his grandfather die during his lifetime. Later, Sung Do-joon was dumbfounded when he heard that the protagonist of the original show died in the end. Since the system has given me a chance to be reborn in Rome, I must live a great life! Sister-in-law is going to take it! Grandpa needs to be saved! You have to be a chaebol! But in the process of ascending to the throne as king, Cheng Daojun discovered that the world is not simple.