The White and Black Dresses
Adelicia is forced by the Association to either appoint a new head of Goetia or get married to legitimize her claim. To resolve this, she offers a marriage proposal to Honami. She explains to a bewildered Itsuki that they will only be married as mages, which does not have the same weight as an actual marriage. With aid from Diana, Adelicia and Honami pick out the clothing and jewelry for their wedding while a disgruntled Itsuki accompanies them. At the marriage ceremony, Daphne administers the rites, but before the final stages are concluded, Itsuki takes both Adelicia and Honami and leaves the church. He explains to both of them that he realized that both did not have their hearts in the ceremony, and were doing it against their wishes. Adelicia subsequently contacts the Association to inform them that the marriage is canceled, and she and Honami throw their rings into the river, which Itsuki is later forced to retrieve.
Aired 03/03/2008EP 21 - The White and Black Dresses

Rental Magica
Due to his father's disappearance, Itsuki Iba has to take over the family business: a magician dispatch service. Their family employs countless magicians and other supernatural beings in order to send them out to help those who need magical assistance. As a leader, Itsuki now has to be tough, commanding, and reliable, but there's one problem, he's a coward. Also, in order to run a successful business, he must connect with his employees, which is more difficult than it seems due to his personality. But not only does he have to deal with his own employees, he also has to deal with those who threaten the family business.
(Source: Crunchyroll)