Description from Google Books:

The New York Times bestselling series about a gifted young girl and the demonic sorcerer who takes her in. The Ancient Magus' Bride is a supernatural romance manga series that features a fascinating relationship between a troubled teenage girl and an inhuman wizard. Kore Yamazaki combines a fantastical shoujo style with a darker, brooding tone that is reminiscent of shonen hits like Pandora Hearts and Blue Exorcist.The Ancient Magus' Bride is an ongoing manga series that includes captivating artwork and color inserts in each volume.Hatori Chise has lived a life full of neglect and abuse, devoid of anything resembling love. Far from the warmth of family, she has had her share of troubles and pitfalls. Just when all hope seems lost, a fated encounter awaits her. When a man with the head of a beast, wielding strange powers, obtains her through a slave auction, Chise's life will never be the same again.The man is a "magus," a sorcerer of great power, who decides to free Chise from the bonds of captivity. The magus then makes a bold statement: Chise will become his apprentice-and his wife!

Snippet from Google Books:

Kore Yamazaki combines a fantastical shoujo style with a darker, brooding tone that is reminiscent of shonen hits like Pandora Hearts and Blue Exorcist.The Ancient Magus' Bride is an ongoing manga series that includes captivating artwork ...