「きみを愛する気はない」と言った次期公爵様がなぜか溺愛してきます

Elsa Yukarainen, daughter of a fallen aristocratic house, cannot work out why Julius Roias, a nobleman of the highest rank, would propose to her. He is kind and gentle right up to the wedding; after it, in a flat, cold voice, he tells her he has no intention of loving her, even as everything he does says otherwise. Married life begins, and Elsa sets about finding out what the mask is for.