Gwihwanmagyogwan
Return of the Demonic Instructor·귀환마교관
A demon invasion leads to the world's destruction, and Bigang Sa is compelled to serve in the demon army for centuries. Following a failed human rebellion, he returns to his body ten years prior to the demons' arrival. He seeks to apply his extensive experience as a demon warrior to establish a new generation of murim fighters capable of preventing the impending invasion.
