Qin Chen was once among the greatest geniuses of the Martial Domain, until he was betrayed and slain in the forbidden Death Valley. In his final moments he awakened the power of a mysterious ancient sword. Three centuries later, in a far corner of the Tianwu Continent, a youth who shares his name inherits his will. This younger Qin Chen is the cherished grandson of King Dingwu, the War God of the Great Qi Kingdom, yet he and his mother are neglected in the royal mansion because his father's origins are a mystery, and the two depend on each other to get by. Determined to write a new legend and protect the people he loves, Qin Chen takes up the duty of defending the five kingdoms and returns to the martial path. The result is a long-running action fantasy ONA with dramatic stakes.