Cheon_Yeowon
Thanks for the chapter. Have the mc become the Vice Leader of the Cult of Heavenly Demon after Joo Moon Baek die and keep Hyuk Woon Sung or Number 900 as the future Heavenly Demon of the Cult of Heavenly Demon. After all Number 900 is the Protagonist of his world and usually they have the protection of the world or luck protection, until they grow to there full potential. Which make Hyuk Woon Sung or Number 900 very difficult to be kill. Why become an Enemy when you can become a long life friend? Also Don't forget the mc have the ability to travel to other Martial Art Worlds if he is able to bring people with him, maybe he will be able to even bring the entire Sect or Cult. With that he will have the power of an Entire sect behind him on any worlds that he goes to and will not be so Lonely. An Heavenly Demon Sect or Cult that span across diverse worlds, with the mc and Hyuk Woon Sung or Number 900 as Future Ancestors. An Heavenly Demon Sect or Cult in which the main motive is Power and Immortality.