Refining Tribulations into Godhood: My Cultivation Technique Can Steal from Heaven

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

Falling into Demonic Cultivation from the Start and Practicing Ancient Forbidden Arts

The protagonist can transform into a demon and change their appearance.

Any Books with a Protagonist Whose Personality Is Similar to Great Love Immortal Venerable?

Decisive and ruthless, playing with the world; strong logic, well-rounded characters, and a dramatic story. The protagonist shouldn’t have everything go smoothly, but should face plenty of ups and downs. A few minor plot holes are fine, just nothing major.

Out of Books? Come for Demonic Cultivation and Heretical Cultivation

Looking for stories like "Cultivating the Demonic Path, Building a Foundation Through Slaughter". A demonic cultivator pursuing immortality, cold and ruthless, decisive in killing, and smart. Romance with women is fine, but no female lead!