I Have a Mansion in the Post-apocalyptic World (Web Novel) - Chapter 1447: On The Brink of War

The Count of Chronia’s youngest son became a warlock to live.

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Ron finds himself reborn in the world of One Piece, stranded on a remote island in the East Blue. But he's not just any ordinary child—he’s bonded to a mysterious sign-in system that grants him powers with every new location he visits.At his first sign-in, he unlocks the legendary Sun Breathing Technique, along with a boost to his vitality. From Shitmotsuki Village to Skypiea, Enies Lobby to Marineford, Ron travels the world, collecting extraordinary rewards that make him a force to be reckoned with. The Raikiri, one of the 21 Great Grade Swords, Armament Haki, Observation Haki, and more fall into his hands.As Ron steps onto the battlefield of Marineford during the legendary Summit War, the mightiest warriors—Four Emperors and Marine Admirals alike—pause, stunned by his presence. But Ron merely waves them off, “Don’t mind me. I’m just passing through.”Join Ron on his journey across the Grand Line as he signs in at iconic locations, growing stronger with every step. This is not just an adventure—it’s a legend in the making.

A bored teenager, after praying to god for something to relieve his boredom, got his prayers answered. It just so happens that Systema Kami, the God Of Worldly Systems, was recruiting an assistant!-Ding![System Creator System has been integrated into the host’s soul!][First Task: Create a soul parasite type system.][Second Task: Grant the system to any living being.][Third Task:…]After receiving the System Creator System, Keith embarked on a journey to becoming the greatest System Creator!Training System, Leveling System, Hero System, Villain System, and even Harem System! The possibilities are endless!When he received the system, some of the secrets of his world were revealed to him!Keith McDowell: System, are you serious? There is a book titled “End Note” that has the power to bring the end of anything. And it just so happens that a regressor obtained it which should have been mine?[Yes.]Keith McDowell: And my schoolmates have been summoned to another world as heroes to defeat the demon lord and save the world?[The creator is right. Not only that, there will be a dimensional gate that will open after a month.]Keith McDowell: Finally! My thirst for entertainment can be satiated!In other words, this is none other than the journey of a young man who wants to entertain himself, whatever it takes!

Zach was a sci-fi game enthusiast who unintentionally crossed over to a magical isekai. Fortunately, he had access to the previous game system and could fight the magic-savvy aborigines with high-tech weapons.

“Magic? No, I have the lightsaber. ”

Unlike what he expected, the system presented him with a different way of leveling up. He had to get some kind of special energy from the pretty girls' bodies on this planet so that he could unlock his weapons.

“What the hell happened? Is my sperm capable of upgrading girls? Can my blood cause those girls to burst out instantly?”

This was incredible.

The succubi were a hated race in the magical isekai because they oversucked male sperm and killed men, but not Zach.

Surprisingly, the majority of the special energy that Zach required was distributed in succubi.

He appeared to be having a fantastic journey.

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