Under the neon shadow of the bustling city, there is a dark world surging with supernatural powers, and a legend full of excitement begins. The heroine of the story is not a bright hero in the traditional sense, but a complex villain who wanders in a moral gray area. With her cold skills and unpredictable scheming, she moves calmly through the vortex of power and desire. She not only plays with the rules, but also often subverts the secular definition of good and evil. The male protagonist who has always been guarding her is a loyal dog-type character who has had a deep love for her since his youth. His loyalty has been tempered by the years, like a silent shadow. No matter she goes to the abyss or the cliff, he follows her without hesitation, and is willing to become her sharpest and most reliable blade and shield. There is a dangerous and fatal attraction intertwined between the two, writing an alternative chapter about betrayal, obsession and ultimate bond in the dark side of the city.