Cosmic Heavenly Demon 3077 is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

After countless years, the Heavenly Demon, sealed within Mount Tai, finally awakened, only to discover that humanity had long abandoned the radiation-soaked Earth and was now exploring the far reaches of the galaxy.