If you don't go crazy, you will become a demon

Inheritance and enlightenment.
A familiar feeling came over him, and Firnir Hepple instantly immersed himself in Shi Feixuan's martial arts practice, as if he had merged into one with her. At this moment, Shi Feixuan was him, and he was Shi Feixuan. His aura suddenly changed, as if he had merged into the world, and as if he had turned into a magical weapon, emitting a chilling light.
Upon seeing this, the monsters instinctively stepped back.
The pupils of the nine demon kings shrank,...