The Great Emperor Abandons Seclusion, From Protecting Humanity to Slaughtering All Life

[Fantasy + Invincible Protagonist + System + Revenge + Ruthless] Two hundred thousand years ago, Su Han defied heaven itself, attained enlightenment as a mortal, and became the Supreme Great Emperor. He guarded humanity's borders, repelled invasions by other races, and kept mankind safe. Two hundred thousand years later, internal strife tore humanity apart, and its people turned on Su Han's clan, seeking to wipe them out and eliminate future threats. “Great Emperor, save us! Humanity is going to exterminate my entire Su family!” The clan members' cries rang across the heavens. Reborn, Su Han burned with fury. He had risked life and limb for humanity, and this was how they repaid him? Enough! Humanity could fend for itself! Disillusioned, Su Han awakened the “Enemy-Slaying System.” From then on, he abandoned the border defenses and let the other races run rampant, vowing to make humanity pay! [Ranks: Body Tempering, Qi Condensation, Foundation Establishment, Golden Core, Nascent Soul, Spirit Transformation, Body Integration, Tribulation Transcendence, Mahayana, Immortal, Great Emperor]