Also known as Cheopja ui Magyo Saenghwal · 첩자의 마교생활 · A Spy's Survival in the Demonic Cult
Story by eunho (대은호) · Art by DALGON · Updates every Wednesday
Updated Jul 21, 2026
Jang Yiseo is a spy for the Murim Alliance, planted deep within the Demonic Sect. Now he's been handed his first and final mission: turn Mao, the Sect's notoriously reckless seventh son, into its next leader. Yiseo possesses extraordinary martial talent but is held back by the limits of his own constitution, while Mao is brilliantly gifted yet hopelessly scatterbrained. As the two unlikely partners collide, chaos follows. Can they rise together to stand second only to the Sect's supreme master in a world ruled by the Demonic Sect?
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