Turns Out I'm the Demonic Patriarch?

As a dying grandmaster awaits his final breath while besieged by self-righteous sects outside his mountain stronghold, an otherworldly soul unexpectedly claims his physical vessel. Linked to an enigmatic gaming interface that rewards life-extending vitality points for completing righteous tasks, the new patriarch resolves to conquer his impending demise.

Guiding a band of devoted disciples, he unleashes staggering combat prowess to recover ancestral treasures and expose the hypocrisy of rival domains. With every quest fulfilled, he reclaims supreme dominion across the martial realm.