Why Did You Mess with Him? He Has People from Both the Immortal and Demon Realms!

[No heroine + system + sinister + decisive killing + similar summoning + immortal and demon dual cultivation + white-clothed immortal/blackened demon] Liu Yunche accidentally traveled to a continent of immortality called Shenxiao Continent, and after eighteen years of imprisonment, he was bound to the Supreme Umbrella System. Good news, Liu Yunche traveled through time. Bad news, Liu Yunche's original body in time travel was a demon cultivator, and he sacrificed the female disciple of the elder of Yuntian Sect to become a demon's dead soul. Worse news, the system hadn't come yet at this time, and he was caught in the Yuntian Sect and imprisoned for eighteen years. After being released from prison after being bound to the system, Liu Yunche immediately used the power given to him by the system to destroy the entire Yuntian Sect, and used the Soul Refining Cauldron to sacrifice everyone in the Yuntian Sect to refine the Demonic Soul Pill. At this time, Liu Yunche's mind was already somewhat demonic, so the system rewarded him with twin extreme bodies in the compensation gift package, which allowed him to practice both immortality and demonism, and the cultivation of immortality and demonism did not interfere with each other. Since then, art has become a reality! "I am an immortal and can protect the peace of everyone." "I am a demon, and I can also cause trouble in the world!" "The immortals and demons have become immortals, and the gods and demons have nothing to fear!"