I Lost the Leash of the Yandere Male Lead

She has long lashes, radiant crimson eyes, and silver hair like an angel's... but she's no angel—she's the villainess Syriana Malforte... and I've been isekaied into her body! The House of Malforte has many gifted mages, but none at the level of Duke Azester. My evil mother brainwashed him into falling in love with me, and I coldly used him until his final breath. But with this second chance, I vow to set him free and return him to a sound state of mind. But how? And my heart aches to know... will Az still love me once he's free?

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?