The battle between Dao monsters thousands of years ago has gradually faded away in rumors, and people equate the existence of monsters with mythical ancient myths. However, Youyuan Sword, which was quietly enshrined in Linzaoyuan, could not lie. The dark brown color on the sword was the blood of the demons at that time. However, the young master of Weiyu Mansion in the Demon World seemed to have lost his memory after experiencing that battle.