Contract Binds the Dark Moonlight

Arrogant and spoiled heiress Yin En accidentally binds to the Guardian System, learning she will die at the hands of illegitimate son Gu Ye. Forced to redeem him, she is shocked when Gu Ye, who pretends to be obedient, turns out to be a sinister villainous powerhouse. Initially, Yin En only wants to tame Gu Ye to complete her mission, but she unexpectedly receives the favoritism she has always craved.