This is a manga based on a popular light novel series of the same name.
Kazehaya Kamito has been summoned to the girl's school Areishia Spirit
Academy, which teaches noble young ladies how to make contracts with
powerful spirits. On his way, he has the misfortune of catching sight of
one of these lady spirit contractors bathing. She is Clair Rouge, and
she is contracted to a spirit named Scarlet, though she has her sights
set on a more powerful spirit. Kamito convinces her to lead him to the
school, but she stops on the way to make a contract with this powerful
spirit. When Kamito ends up 'stealing' the powerful spirit, it is
revealed that he is actually an unheard-of male spirit contractor! What
could be the origin of his power? Now Clair is determined that he's
going to have to support her, since she believes that the spirit he now
has power over what should rightly be hers...
