Shinobu is a school girl that possesses the powers of an exorcist. She lived with her grandfather, who has died. leaving his church to her. It was her grandfather that helped her control her power in order to use it in service to the church. Now that she is alone, an uncertain future is before her. But wait, the new transfer student, Rihito Konoe, suddenly declared that he is a disciple of her grandfather's and that he will be aiding and protecting her. What is strange is that she doesn't remember her grandfather having a disciple. Who is this person really?

From Shoujo Crusade:

Yamada Chizuru was a normal high school student... that is, until her mother left for a "journey" leaving her with a debt of one hundred million yen! As if that wasn't nerve-racking enough, Kuze Mitsuru, the Umegaki gang's Sandaime, saves her by buying her to be his fiancee?! What will become of Chizuru's days?

Contains the side story Coffee is a Black Witch.