Betrayed and murdered overnight by the Heavenly Demon, to whom he had whispered love and devoted his loyalty, Jeon Suyeon dies harboring resentment toward the Heavenly Demon, Ki Yushin.
When Jeon Suyeon comes to his senses, he finds himself in the training grounds of the Heavenly Demon Cult, ten years in the past.
Determined to escape the Heavenly Demon in this life, he pours all his effort into breaking free. However, the more he tries, the more entangled he becomes with him…
To make matters worse, in his previous life, he was the Heavenly Demon’s beloved lover, showered with affection. But now, he has become his disciple, forced to serve a capricious master.
In this life, he had hoped to seal the Monster Hollow, sell the Demon Crystal, and live freely with the money. But somehow, things keep going awry.
