Nine Heavens Sword Demon.

Summary

In a fierce battle, Nie Feng, aided by Yan Huang and a little fox, ambushes Zhi Kui and Zhi Hui, who are caught off guard. Zhi Kui suffers a brutal defeat, ultimately killed by Nie Feng's sword, Lian Xie Jun, which absorbs his essence. As Zhi Hui flees using a teleportation talisman, Yan Huang realizes that Nie Feng is under the sword's sinister influence, leading to a bloodthirsty transformation. After the battle, Nie Feng is confused and unaware of his actions, learning from Yan Huang that the sword compelled him to kill. He is warned to avoid using Lian Xie Jun until he can control its power, fearing it may lead him to lose his mind.

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