Nidome no Jinsei wa Koukaishimasen: Koufuku End wa Fukushuu no Nochi de
No More Regrets·二度目の人生は後悔しません～幸福エンドは復讐の後で～
Ceriniel discovers her husband has been unfaithful with her best friend and has been poisoning her for years. After her death, she is reborn in the past and seeks vengeance against those who wronged her. She approaches the ruthless war hero Duke Lexion Rosenvester, who had shown unexpected kindness to her in her previous life. He agrees to assist her, but only if she leaves her husband and enters into a permanent marriage with him.
