I Lost the Leash of the Yandere Male Lead

[I transmigrated into a novel and became the villainess, Serina who comes from the noble Ducal Melford family., As a well-to-do character, I tried to mind my own business, but the story had other ideas. A self-proclaimed mother brought back a boy – the duke’s heir and a genius wizard – intent on brainwashing and blackening him., The contents of brainwashing are two things:, 1. Obey our family., 2. And fall in love with Serina., Thanks to that, the brainwashed twisted yandere is obsessed with me…, I can’t do this. I have to undo the twisted character’s brainwashing!, By the way, what’s this situation?, “Now that the brainwashing is gone, I’ll do as I please. So Serina, please, let’s do our best.”, I’ve solved his brainwashing… but why does he seem even crazier than before—, Did I make a mistake?]