Reborn, I Contracted a Demon Lord as My Servant

A young heiress, consumed by a deep hatred, is desperate to uncover who her enemies are and make them pay for what they have done. As she teeters on the brink of death, she sells her soul to a demon and is reborn. That demon is none other than Mozun, supreme ruler of the Demon Realm. Their bond as master and servant can be traced back to their previous lives. In their former life, they were a celestial couple admired by all. After breaking the laws of Heaven, one was reduced to a drifting soul, while the other fell into the demonic path. After the entanglements of two lifetimes, the lovers are finally united.