Read Manhwa A Spy's Survival in the Demonic Cult online in English. Also known as The Spy Life in the Demonic Sect, The Spy’s Life In The Demonic Cult, Cheopjaui Magyo Saenghwal, 첩자의 마교생활, 密探的魔教生活, and 間諜的魔教日常.

Jang Yiseo is a spy from the Murim Alliance hidden deep inside the Demonic Cult, and his final assignment is anything but simple. To finish his mission and return alive, he has to turn Ma Oh, the infamous seventh young master, into the next vice sect leader of the cult.

Yiseo has the instincts and martial insight of a rare talent, but his weak body keeps him from using his full potential. Ma Oh, meanwhile, is brilliant, dangerous, and impossible to predict. Their uneasy partnership pulls them into a brutal world of succession battles, cult politics, and enemies watching from every corner, where one wrong move could expose everything.

This series may appeal to readers who enjoy murim intrigue, undercover protagonists, and martial arts action with sharp character tension.