Minami has reincarnated as Lavinia, the "Villainess Queen" from a novel. However, a grim fate awaits this character: the Villainess Queen is destined to be betrayed and assassinated by a trusted male companion. To change this future, Minami must interact with the five men who are potential suspects, determining who is innocent and who is guilty. At the same time, she rushes to resolve the past troubles that caused them to resent her in the first place. Thanks to Minami’s efforts, the men begin to develop affection for Lavinia. Yet, hidden amongst them, the real assassin is steadily preparing his plan to take her life... Can Minami uncover the culprit's identity and motive, and successfully avoid her fated death?