The Undying Demon Bone

After cultivating demonic arts for millions of years, I look back and choose not to become an immortal! The orthodox sect casts me out, and my fellow disciples scheme against and humiliate me time and again. Just as I’m about to be possessed, I blow up my own soul, only to be blessed by disaster and merge with an indestructible demonic bone. From then on, I cultivate the demonic path and become the mightiest Demon God!