The Villainous Senior Brother Is Actually My Late Ex-Husband

【An explosive, temperamental junior sister × a senior brother who starts out cool, gentle, and honest, then becomes a gentle, yandere ghost】【Female lead's growth】【Death as a shield】【Ex-husband romance】【A little angst for the male lead】【Ex-husband wins her back】 Other people transmigrate into a book to win over the male lead. Yuan Yi transmigrates into a book to torment the villain. But can someone tell her why the villain, her senior brother, is actually her ex-husband? So Yuan Yi carries out her missions while using them to settle old scores. Ever since Shen Jianshan met a junior sister who cursed him out the very first time they crossed paths, one strange thing after another began happening to him. Not only was he constantly the subject of rumors, he also kept inexplicably drinking bathwater. When he took a bath, the tub would turn into wine, leaving him bright red all over while he taught class. Literally. Or, while he was sleeping, a fake ghost of a junior sister with disheveled hair would appear on the rafters and bare her teeth at him. Before long, his reputation was in tatters. During the battle at the border city, Yuan Yi lost all her spiritual power and died before his eyes. That man, usually so cool and restrained, became a demon overnight. He slaughtered the demon clan, cut down the Heavenly Dao with a single stroke, and nearly buried himself along with it. Five hundred years later, Yuan Yi was reborn. But she heard that her ex-husband, who had watched over her for five hundred years, had finally decided to die on the day her soul lamp went out. Yuan Yi: ... Ex-husband, wait! I still think there's a chance we can save you!