The Demon Lord Cultivates Again: I Shall Slaughter the Heavens

[No System + revenge + slaughter + decisive, ruthless action + scheming + one female lead + invincible] On this day, the forbidden grounds trembled. Streams of black mist poured out, shrouding the entire galaxy. A voice so cold it chilled to the bone rang throughout the forbidden grounds. “What is righteousness? What is evil?” “You destroyed my path and killed the one I loved.” “Heh heh heh heh... I’ll make every last one of you join me in death...” The Demon Lord, sealed away for ten thousand years, emerged into the world and appeared at the Divine Sword Sect in Nanzhou. On this day, the Divine Sword Sect suffered its greatest calamity in tens of thousands of years...