Inheriting the Demon Lord, I Become a Villain and Still Have to Fight Against Heaven?

Luo Yan accidentally travels through the fantasy world, activates the fate-defying demon lord system, and obtains the inheritance of the devil. As long as he changes his destiny against heaven, he can get rewards. There are three thousand worlds here, divided into nine heavens, and all heavens and heavens gather in the Yuan Realm. Disciples from the major forces in the Yuan Realm must take their missions and go down to the world of heaven to find opportunities to practice. It was only when I went to the lower realm for the first time that I discovered that the system's plan to change one's destiny against the will of heaven actually meant changing the fate of the child of destiny, and even the trend of heaven. It happened that the son of luck, whose engagement was broken off, came to fulfill the three-year agreement with a ring on his left and a strange fire on his right hand. And the girl who broke off his engagement was the junior sister who was rumored to be in love with him. The villain and supporting role template opens, and Luo Yan is confused when he is about to be killed by the script. I just inherited the inheritance of a demon lord, and you actually asked me to fight against the way of heaven? It seems that he will never be able to get rid of his identity as the villain of all heavens... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.