Hey, I have a few fantasy novels about the Heavenly Demon that I can recommend to you! Among them, the Descent of the Heavenly Demon, Primordial World Venerable, Heavenly Demon Swordmaster, Berserk Heavenly Demon, Heavenly Demon Ancestor Slaughter, Heavenly Demon Immortal Extermination, Heavenly Demon Rebirth, and Primordial Heavenly Demon were all good choices. These novels all have plots with the Heavenly Demon as the main character. I hope you will like it!😁If you need more recommendations, feel free to let me know. I hope you like my recommendation, Mwah ~😗