After being reborn in the apocalypse, Yang Hao returned with a "System" and accidentally awakened the remnant soul of a Sword Sovereign. He thought it was just a cold, impersonal tool, never knowing that it had taken the form of the Sword Sovereign's amnesiac junior sister, who had drifted into the human world and silently protected him as a System. In the zombie-ravaged wasteland, he used the System as his guide to cultivate the ancient sword path, merge with demonic power, and cut through the zombie horde with a holy sword, protecting the people he loved. But during a desperate battle to the death, the System, who was the Sword Sovereign's junior sister, perished completely to save him. Only then did Yang Hao learn the System's true identity. He continued forward in a world where order had collapsed. With the Sword Sovereign's help, his strength grew considerably, and he swore to save the Sword Sovereign's junior sister, his own System.
