Ren Onodera, president daughter of global large companies "Onodera Corporation". Social life And it's to be a cool lady famous intellectual in the field, but the face of the back is "unusual talent who manipulate the Blue Flame", and is also a ruthless pleasure murderer. In addition to genius brain and exceptional physical ability, of her that has also to a higher social status, is a disadvantage that it can be said that the fatal and the only, was the "murder pleasure disease". Only by hunt a lot of life, she was able to taste the mood filled. Such as the rest of the life, it is not only a preparatory stage for the hunt. However, recently it became dissatisfied with the quality of prey. Easily killed, not the vulnerable prey that would, wanted more "strong" prey that is caused to lift her