Modern young man Lu Zhan traveled to a different world in the Great Xia Dynasty where martial arts were respected. As soon as he opened his eyes, he was surrounded and blackmailed by two warriors. The original person was timid and cowardly, and was bullied all the time. While the memories were merging, Lu Zhan was kicked in the center. The severe pain aroused the unwillingness deep in his soul. At the critical moment, he activated the system and killed him on the spot. Then he joined the Demon Slayer Department and took over the jurisdiction and became the person in charge. When the demonic tide engulfed the city, all living beings howled. He was the only one dragging a coquettish long knife, crushing the throne of the demon god, and pointing the sword at the sky.
