I am the bride of the ruined Wicked Duke / Machibari

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

The Count's daughter, Eileen, sees Claude as a potential fiancé to her half-sister and realizes that this is the world of the novel she had read in her previous life. In Character, Claude became a scoundrel by being trapped and ruined with Eileen's parents. Eileen decided to marry Claude instead of her half-sister in order to help herself and her family. She was prepared to be treated as a fancy wife like her half-sister in the story, but contrary to expectations, she continues to be doted in. However, just as soon as she thought she might be able to lead a happy married life without falling into a scoundrel, Claude was falsely accused?