You Agreed to Be an Undercover Agent, but You Made the Demon Lord and Empress Bad.

[Fantasy] [System] [Exhilarating] [Decisive Killing] [Undercover] [Empress] Gu Yuan traveled to a fantasy world to work as an undercover agent for the Demonic Cult. However, he unexpectedly found out his identity and was thrown into a dungeon. There was also a group of prisoners who were eyeing him. At the critical moment, the most powerful undercover system is activated! The natal magical weapon Soul Refining Flag is bound! Are all the insects eating my heart? Sorry, I have mastered all the Gu insects! Warcraft? Practice! Magic weapon? Practice! No matter what, I will practice it all! What? Can soul refining also improve cultivation? Now Gu Yuan is invincible. Mosquito? Fly? Just excessive. When Gu Yuan held up the soul refining flag and refined a Taixu ancient dragon in front of the Demon Empress, everyone was stunned. Zhengdao: Didn't he go undercover? Why do everyone in the Demon Cult listen to him? Demonic Cult: Our Holy Cult has become like a great emperor! What? Is he an undercover agent? Impossible! ! ! The Demonic Empress: Gu Yuan, can I show you my COS Transformers tonight? Gu Yuan: Okay, okay, I haven't practiced Transformers yet.