Kon'yaku Haki Sareta "Kuuki" na Watashi, Nariagari no Danna-sama ni Totsugimashita: THE COMIC

One day at a tea party, Iris, a daughter of a marquise, is suddenly told that her engagement has been called off. She loses her fiancé to her beautiful half-sister. In addition, she is married off to Baron Lucas, a wealthy merchant who is rumored to be ruthless and womanizing, as a form of debt...