After Time Travel, My Ex-Demon Lord and I Traveled to the End of the World

One day, Tang Tang tragically dressed up as an undercover agent sent by the Cultivation World to the Demon Realm. Her mission was to steal information about the Demon Realm. Who knew she would be fooled, and the people in the Cultivation World actually wanted to turn her into a real puppet. In the demon world, Tang Tang met the former Demon Lord Shen Du and learned about his experience. In order to understand the poison in her body, she and the Demon Lord experienced a lot together. They overcame various difficulties together and finally ran towards happiness.