Fallen Demon Reborn: My System Is the Three Demon Lords of the Past Dynasties

I never thought I would be reborn. In my previous life, I achieved the highest level of cultivation. In this life, I am asked to be a demon. Wait... When I died, my ancestral grave was dug up by others? You dare to scold my parents? Sue me for slander! He had done so many good things in his previous life, but he ended up like this after his death. I want revenge, I want to be a demon. I want the whole world to repay me. What? ! After my rebirth, the demon lords of all generations transformed into soul lights to guide me in my practice. What reason do I have to lose!