Shirogane

One of the three heads of Cerberus. Shirogane stands for power, born of Roze's desire to be stronger (or rather her hatred of her own weakness). Even commonly powerful monsters like Ifrit are considered by her to be small-fries. Shirogane loves Roze deeply, and tries her best to protect Roze from all pain, physical and emotional, to the point where she believes Roze is the only reason why she exists. Indifferent and even condescending towards Chiaki at first, she eventually warms up to him after realizing his kindness.