Primal Start: I Got the Luck System

Philip, a worn-out office worker, collapses from overwork and opens his eyes in a primal age, inside the body of a clan chief who has just been deposed. Stripped of his standing, he finds himself bound to a mysterious Luck System that promises to change his fortunes. Hungry for a comeback, he must rebuild his fallen clan from nothing and face the rivals who pushed him out. The path back to power will test every bit of the cleverness and grit he learned in his old life.