Rubik's Cube Expert

After the earth experienced a cataclysm, the Rubik's Cube civilization swept the entire world, and darkness and injustice filled every corner of the world. Under such an environment, a peerless bastard who aspired to become the world's richest man emerged... (The content may be very different from the popular style now, but the brotherhood who reads it patiently believes that the author is a man who can create miracles!)