The most despicable System

Lukas was a normal cultivator in one if the continent's biggest sects. But that was about to change when he suddenly acquired a system. With the help of the system he could learn countless martial arts techniques and cultivation techniques and even change his innate talent. Only problem? All those techniques were despicable demonic techniques. Techniques about blood cultivation, poison techniques, or just despicable techniques that involved dirty tricks. Would he embrace these techniques and learn them? Or would he stay good hearted and ignore them. Or would the system even slowly corrupt him?