I've finished/reading Reverend Insanity Birth of the Demonic Sword (Not sure if the MC is a demonic cultivator since I just started reading it) Gread Demon King
Grasping Evil God Of Slaughter Soul of Negary Warlock of Magus world The Lords Empire Zhu Xian Dungeon Defense Steward of Demonic Emperor The Girl Who Ate Death God Summoned Slaughterer Nidome no Yuusha Senketsu no Elf Below is the list of novels with tag Demonic cultivation Technique https://www.novelupdates.com/series-finder/?sf=1&tgi=21268&mtgi=or&sort=srank&order=asc Below is the list of novels with tag Demonic cultivation Technique, Antihero or dark https://www.novelupdates.com/series...,4599,21268&mtgi=or&sort=srank&order=asc&pg=5