I'm a Martial Arts Practitioner, What Kind of Alienation Transformation Should I Do?

Decay, cruelty, distortion, and a dark world. Secret martial arts, evil magic, sorcery, extraordinary power. Since falling into this filthy quagmire, Pei Yue has trained his mind and practiced secret martial arts, accumulating strength step by step. Look around, it's dark, with no light in sight. When I pick up the knife and drop it, I'll kill him cleanly——