Otaku Liu Feng is duped by the “Transmigration Company.” He meant to transmigrate into the world of his favorite novel, but instead tumbles into "The Demon Lord’s Three Million Harem" and becomes Liu Sangxu, a doomed traitorous disciple destined to bring about his own death. He is also bound to System 007, which forces him to complete missions to “torment his master, Gu Shizhou.”
To stay alive, he has no choice but to play the innocent schemer, framing and drugging his master. Yet with each mission, he glimpses the real Gu Shizhou: a reserved, aloof master feared by the immortal sects and misunderstood by everyone, who is actually gentle and restrained, burdened with baseless accusations, and once even wounded himself to prove his innocence.
When Liu Sangxu accidentally feeds Gu Shizhou an aphrodisiac pill, he learns of all the terrible things he, the original owner of this body, did to his master in a past life. He also discovers that Gu Shizhou was left helpless and on the brink of death because of his schemes. His heart fills with nothing but remorse.
He refuses to remain a puppet forced to carry out missions, and he cannot bear to let Gu Shizhou meet the same deadly fate again. So Liu Sangxu does a complete about-face. He fights to protect his master from the immortal sects’ machinations and the demons’ schemes, while threatening System 007: “Either you apologize to my master, or we both go down together!” Once a traitorous disciple forced to commit evil, he has now become his master’s most devoted guardian. All he wants is to rewrite this tragedy, so that a man who has lived an innocent life will no longer die wrongfully, covered in wounds.
Awesome, the plot is good, it suits my cruelty point