[Cultivation] + [Decisive Killing] + [Follow Your Heart] + [Genius Flow] + [No Level Suppression] + [Multiple Women]

This is a story about an undercover agent who grows up to become a demon lord.

Mu Fan possesses superb spiritual roots and a pure yang body. He becomes stronger when practicing sword skills, but is framed by a so-called righteous fairy and has his entire family massacred. He is also sent to the Demon Sect as an undercover agent.

Demon Sect? Here, resources are easily looted, enemies are easily killed, and there are also a group of senior sisters, junior sisters, masters, and ancestors who can take whatever they want...

This undercover agent is a dog!!!

Since I was sent to the Demon Sect, I should capture demon girls and immortal slaves, wipe out this hypocritical righteous path, and restore the "clean and upright" environment of immortal cultivation to the world of immortal cultivation...