I'm Working as an Undercover Agent in the Demon Gate

"Elder, I have been undercover in the Demon Sect for three years... When can I return?" "Wait a little longer. Once the mission is completed, you will be allowed to return." … "They made me the hall leader!" "A good thing. Continue to lurk for the benefit of the world." "But you said -" "Hold on a little longer. When the Demon Sect is overthrown, you will be the chief disciple." … "Three years, and three years... Do you know how I survived?" "The sect misses your hard work. This mission is over and I will teach you the core skills." … "They elected me as the deputy leader... Can I still turn back?" "Of course! When the great cause is accomplished, you will be a first-class hero." … "Good news! After this time, you can come back -" "Which sect should I return to?" "I am the master of the Demon Sect, and I am at odds with the right way..."