What? The switched-at-birth trope from a wealthy family finally happened to me too?! On your twentieth birthday, your parents announced to the public that you would inherit everything of the family in the future. Then a middle-aged man showed up and said you were actually his child. Your parents investigated and discovered that, years ago, a servant in the family had swapped you—born on the same day, month, and year—with their biological child. That child is also twenty this year, and his name is Chen Fan. A few days later, your parents took you to pick him up. They weren't warm toward this child; they just didn't want their biological child to be left out in the world. They glanced at Chen Fan, then called you into the car, not caring at all whether Chen Fan followed or got into the same car as you. (Also known as the "White Moonlight Series." Whether you choose a gentle-guide persona, a green-tea persona, or a villainous supporting persona is all up to you.)