Kujibiki Tokushou: Musou Hāremu ken - Chapter 273

This is a story about the protagonist getting the system, going crazy in the biochemical apocalypse, producing aircraft and tanks, destroying zombies, saving good people and killing bad people.

- Description from novelbuddy

[Reformatting World Settings...][Real-World Currency Disabled.][Physical Laws Adjusting to Game Protocols.][Initiating Player Culling Sequence...][All Players Age 60 and Above Will Now Be Eliminated.]A blue screen appeared before every person in the world, displaying those chilling words.At first, many believed it was some kind of elaborate hologram prank—until every person aged 60 and above disintegrated into glowing particles.But that was only the beginning.The world had changed. Humanity had been turned into “players” in a twisted system where survival meant leveling up through killing others or completing brutal quests. Fail to level up in time—and you're dead.Shinra Takamura, a 20-year-old survivor in this new Filthy World, receives a rare skill Lewd Reap: the ability to steal another player’s ability through intimacy.But can he survive the chaos, the betrayals, and the moral decay with such a controversial power? Or will the world break him before he ever learns how to use it?Read on to find out.This book is a smut novel with a solid plotline, set in a world of survival and extremely gory scenes. The main character is no goody two-shoes—he’ll do whatever it takes to survive. He’s not evil, though; he doesn’t kill without reason. The story begins with his transformation, showing how a once-good kid was shaped by a brutal world into the person he is now. Hope you find it interesting (:->

[You have awakened with the Lifespan Extraction System!][Extract Lifespan, advance your Cultivation and Cultivation Talent, amass an unstoppable Army of Shadow Beasts, and ascend to the Pinnacle of the World of Immortal Cultivation!]In the Super-Continent of Legaria, a Godlike youngling was born… and abandoned.Scorned and hated by all for merely existing, Zar struggled day in and day out, just trying to survive to see the next dawn. In a world of Intelligent Beasts, he, a Half-Beast, Half-Human—a species alien to the inhabitants of Legaria—had no one to rely on.By some miracle, he managed to make it in one piece to his 15th birthday. A day… which changed everything for him.*Ding!*[Are you ready to become the Ultimate Immortal Beast Tamer?]Fate shall be rewritten!Zar—a lone Godling—shall rise up and make even the most arrogant of God Beasts and Immortal Cultivators relinquish their strength to him!

At the end of the road, in the throes of despair and impending death, Le Yu shouted defiantly:“If you have the guts, then kill me.”The enemy sneered and said:“I've never heard such a strange request.”Le Yu died.Then Le Yu came back to life, living in the enemy's body.This is a story where being killed means possessing the killer.“Why are the ones who kill me always some enigmatic, cunning figures with complicated backstories and numerous impending quests?Why aren't there some honest, wealthy, lady-charmer winners in life coming to kill me!?”