The Great Demon King of the Demon World: There Is a God-Level Backstage at the Beginning

After traveling through time, Gu Nan understood the truth that people cannot eat whatever they want~~~ Ding—— The host binding system takes effect. Article 1: Everything comes first with the safety of the host's body Article 2: Everything must obey the binding system as a rule ... Bang—— The system manual was bound and torn. He, the majestic demon king of the demon world, will be tied up by the binding system, what a joke! Ding—— Apparition takes effect! The demonic power is upgraded! Looking at the flashing skill book that appeared in front of him, Gu Nan took back what he just said... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.