Bourei Madoushi no Hiroiage Hanayome

Laila, the daughter of a grieving merchant family, loses her fiancé to a friend. She is suddenly proposed to by Julius, a skilled magician who is feared as a "ghost" because of his appearance. Laila was engaged without knowing his intentions, but as soon as she arrives at the mansion, she is invited to spend the night with him...? Source: MU