You Become an Immortal, I Become a Demon

Any Books Like I Drove Myself Mad Training to Become an Immortal?

I'm running out of things to read and can't find anything good. No frustrating stories, and no saintly protagonists. I'm really desperate here T^T

Today You Enter the Immortal Path, and I Enter the Demonic Path!!!

This Is How a Novel Should Be: Becoming a Demon, Entering Immortality

Looking for books like From Demonhood to Immortality. This is what a truly wild imagination looks like.