平魔策之红颜长情剑

Five years ago, a terrible virus from the West swept across the Central Plains, and those infected turned into bloodthirsty demons, known as "Blood Demons". The legendary hero Ouyang Chun, with the help of the ancestral magic sword, successfully killed the source of the virus - "Demon Ancestor" and saved all living beings. However, few people know that during that tragic battle, Peiru, the sister of Yue Qingyin, his beloved woman, was also unfortunately infected by the virus and became an extremely powerful new "Demon Ancestor". Although she lost her mind, Peiru obeyed Ouyang Chun's instructions and sealed herself in the sword case of the Changqing Sword

In order to keep Peiru alive, Ouyang Chun suffered a lot and had to protect her at all costs. However, he paid too much for this and sacrificed many innocent lives. Ouyang Chun felt deeply remorseful, and he knew that he had to find a way to restore Peiru to be a human being. After he decided to complete this final mission, he surrendered himself and accepted the punishment he deserved.

On the night when he was about to transform Peiru, Ouyang Yi, the dark side hidden deep in his heart, revealed its original shape. He longed for greater power, and attempted to turn Yue Qingyin into a new "Demon Ancestor" and become the supreme martial artist. Between good and evil, Ouyang Yi was unfortunately infected with the virus. When he lost his mind and rushed towards Yue Qingyin, he stopped suddenly. The virus dehumanized him, but it also made him let go of his desire for fame and fortune, and face his true heart.