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?