I Am an Ordinary Disciple, but Behind My Back I Am the White-Faced Yama

(Multiple female protagonists + brainless cool writing + pretending to be a pig and eating the tiger + no system) Li Muan traveled through fantasy and was born into a declining family. In order to protect his family and sister from being targeted by the Demon Cult, Li Muan hid his identity On the surface, he is just an ordinary disciple of Qingyun Sect. In fact, it is the white-faced Yama who makes everyone in the Demon Sect fearful.