One Planet for Everyone! Building Science and Technology Civilization at the Beginning - Chapter 488(Plus)

[Initializing Harem System of the Demonic Dragon God]“Damn! I was right!”He received the greatest gift of all, a System!A world of cultivation, where the strongest rule! The man took the place of Strax Vorah, a noble abandoned by his family that worships the Sword.With an insane desire to become the strongest of all, he now wants to have the most powerful wives!________________Additional tags: Fantasy - Adventure - Action - Romance - Harem - R18 - No NTR - No Yuri - Weak to Strong - Bloodlines - Evolution

Kwan Dae-ha.

Alix, a devoted player of Strongest Kingdom, finds himself reincarnated as his in-game avatar—the powerful and fearsome Demon King—in a mysterious and unfamiliar world. Armed with his gaming prowess and a penchant for stirring up trouble, Alix must navigate a realm fraught with danger, intrigue, and opportunity.As he discovers the secrets of his new domain, forms alliances, and faces relentless foes, one thing becomes clear: chaos follows wherever he goes. Will Alix rise to become the ultimate ruler, or will his wild antics lead to his kingdom's downfall?Join him in this thrilling, action-packed adventure where strategy, humor, and epic battles collide!

In one fateful day, the world has suddenly turned into chaos as zombies appeared from every major city on the planet. Millions were killed each day and the world government collapsed in just a month.Just as the world was about to lose hope, one person, Thomas Estaris, awakened a system that allows him to summon weapons like pistols, assault rifles, even heavy weaponry such as tanks and helicopters.Will he be able to save the world from its destruction caused by the zombies or die trying?