"Jishou Akuyaku Reijou" ni Korosareta Last Boss no Yarinaoshi: Bocchi na Reitetsu Koujo wa, Daini no Jinsei de Riajuu wo Mezashimasu

Milly Asteara's story should have ended in death by villainess. Known to some as the "final boss," Milly is an ice queen with a noble background and little interest in others. That chapter in her life comes to a close when she is callously murdered by Angelina Grey—the self-proclaimed villainess convinced this world is an otome game—and awakens three years in the past with all her memories intact. Determined to escape the humiliating fate that once claimed her life, Milly sets out to rewrite the future by gathering information, choosing allies, and reevaluating the world around her. Unfortunately, her rival won't stop until she gets her happy ending with Prince Gilbert, and she's willing to kill for it. Poisoned teacups, political rivalries, and hidden reincarnators turn everyday life at the academy into a battlefield. But for Milly, surviving this second chance means more than revenge—it's about carving out a life where she can truly belong!

(Source: J-Novel Club)