So what about the righteous way, what about the evil way and the crooked way, the righteous way is intriguing, ruthless and ungrateful, and the demons who endanger the world are honest and affectionate. A pair of childhood friends wander between the two ways of good and evil, and turn against each other. Righteousness and evil are originally in a single thought, but those who become demons cannot destroy their humanity, and those who insist on the righteous way lose themselves. This story begins in Shushan.