They are unconscious of humanity. Even though they hate each other so much, but deep down they are killing people. It's not easy Because they are not the actual killer
They are South of the sense of affection. Even if they hate each other so much, but he must. They will kill people. It is not easy because they are not the real killer
They are of the human's intuition even though they hate each other, but deep down, they will be killed and it is not easy because they are not the real murderer