Pandora's Hearts. Book 6

Learning from Duke Balm that the seals holding the soul of Glenn Baskerville were entrusted to the care of five masters of magic and alchemy, Oz and his loyal companions set off to one of them. Unfortunately, at the sorcerer's mansion, friends are met with a rather unwelcoming reception, but even this pales in comparison to the bloody event that will happen shortly thereafter… A monstrous event, yet still the beginning of a friendship between two irreconcilable enemies.