Gao Yu, who'd spent his whole life as a workhorse, transmigrates and becomes Gao Juan, a second-generation cultivator of the Demonic Path. He thought he could slack off and enjoy life forever, but the System he happened to acquire was a little off.
System: “Young man, do you want to become stronger?”
Gao Juan laughs heartily. “Ha! As transmigrators, we're meant to become beings who look down upon all the worlds!”
The System gradually lights up. “That's the spirit! Let me give you a hand!”
The System shines brilliantly, illuminating the young man's stunned face.
Gao Juan: “W-what's this death countdown supposed to be!?”
System: “I'm the Strongest Grind King System. If you won't grind, do you expect me to grind in your place?”
Gao Juan: “Damn it! If I have to grind, then none of you are getting out alive!”
And so Gao Juan resolves to cultivate bitterly until he can become an immortal and escape this wretched System.
But the world of cultivation is nothing like he imagined. Everyone in the Demonic Path is a beast, and the righteous path is even worse. Danger lurks everywhere, and only with the System's help can he struggle to survive and grow stronger.
A hundred years later, Gao Juan, the Heavenly Venerable of Relentless Grinding who unexpectedly became the leader of the Demonic Path, looks down at his countless disciples and smiles.
Young disciple: “Heavenly Venerable, what's the secret to cultivating in the Demonic Path?”
Gao Juan smiles. “Simple. Grind, and grind until you drop!”
“Why cultivate in the Demonic Path if you won't grind?!”