I Am the Righteous Master

[I, Jiang Yun, the number one undercover agent in the Immortal Realm! 】
[Three years of hidden demons, outstanding performance, and became their holy son! 】
"Three years after three years, if I don't accept the Internet, I will become the next Demon Sect leader!"
After going undercover for three years, Jiang Yun, the first sect of the righteous path, the chief disciple of the Haoqi Sect, learned the following news:
The head of the Haoqi Sect, the only old senior who knew his true identity... sat down.
[Bad, I'm the villain! 】
Guess-
Junior Sister Heihua: "Senior brother, you said back then that you wanted to marry me as your wife. If you don't keep your promise, then you will splatter blood..."
Master Zhengdao: "Yun'er, don't be obsessed, come to Master's arms..."
The Holy Maiden of the Demon Dao: "In the past, the Holy Son saved my life, and the concubine is willing to repay the Holy Son with the entire demon sect and...with the little girl for a lifetime."
Demon Master: "Rebel! Hurry back to your room, I haven't practiced with Master today..."
So--
Righteous Way or Fallen Demons, is this still a question?
(This book is also known as "After Betrayal, My Junior Sister Has Been Blackened", "Save My Disciple from the Fallen", "Miss Mo Dao Wants Me Into the Family", "Master's Strategy")