もう二度と、あなたの妻にはなりたくありません

The Duke and Duchess Kordou, Flora and Edgar, were a mutually loving couple who united after a great Romance. However, as soon as a viscount's daughter named Natasya appeared, Edgar welcomed her as his mistress and stopped looking at Flora altogether. After being continuously harassed by Natasya, Flora tried to make her drink poison as a counterattack, but she was outsmarted and poisoned to death instead. However, when Flora, who was supposed to be dead, woke up, she was at her family's Marquis house. Apparently, she had returned from death to a time before she met Edgar. Flora, who never wants to face such a conclusion again, tries to avoid marrying Edgar by learning from the failure of her first life, but...?