Kisara, the daughter of a duke, suddenly finds herself trapped in a time loop where she returns to the past every time she dies. Branded a notorious villainess and tormented by her own family and fiancé, she endures hundreds of deaths yet refuses to give up on life, constantly searching for a way out. At the moment of yet another death, a mysterious entity asks her, "Do you... still want to live?" Kisara firmly declares her desire to live fully and find happiness. Then, a silver-haired assassin named Ash appears before her... This is the story of an assassin and a villainess embarking on a journey of escape and revenge.