While Others Cultivate, I Use My Multiverse System - Chapter 170: I will have you return the sacred core!

Mark is a genius military weapon designer who was kidnapped by a mafia gang after refusing to work for them.
They forced him to design unique weapons for five years, until one day he successfully escaped only to get shot by his trusted comrades.
*Ding! You awakened a weapon system.
When he opened his eyes, he was in a different body and in a different world.
"You want to kill a wild boar without being detected? Forget about bow and arrow. Here, I present you this sniper rifle."
"You want to kill a horde of goblins from the sky? Forget about those flying carpets and brooms. Here, I present you the fighter jet."
"You want to kill a dragon? Forget about taking the help of the S-class adventure team. Here, I present you a nuclear bomb."
Join Mark Spencer/ Lu Zhen as he brings the whole world to its knees with the help of his weapon system.
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Note: Author isn't born in an English-speaking nation and has no editor either. So, please be understanding if there are any grammatical errors.
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Keita Sumeragi was a man of dreams—once a hopeful mangaka who poured his soul into heartfelt tales of romance, comedy, and friendship. But the world never smiled back. Readers ignored him. Publishers laughed. And when the only offer he got was to draw the one thing he hated—NTR (Netorare)—he refused.Until life left him no choice.His wife walked out. His daughter starved. And when his first NTR manuscript was complete, the publisher gave the job to someone else.Broken, guilty, and hollow, Keita leapt from the rooftop with a bitter smile—Only to awaken in the world of his own rejected NTR manga.In this twisted realm, he’s reborn as the main protagonist—handsome, popular, and surrounded by women with all-too-familiar faces. His sweet and kind “motherly” wife resembles the wife who left him. His seductive stepsister has the same eyes as his daughter once did.In this warped erotic hell, where anyone can be seduced—teachers, aunts, even grandmothers—Keita must face his deepest guilt, his darkest fantasies, and the genre he once despised.Because in this world, NTR is fate.And the story must go on.

In the winter of Taikang Year 3, a girl pays a visit to her future in-laws, the Ning Family of Beiliu, Yangcheng.

After her engagement was denied, the girl decided to hang herself in front of the Ning Family to show them her sincerity.

When the girl who had died opened her eyes once more, many people’s fates were changed forever.

- Description from Novelupdates

This book is also known as: “The Wandering Ninja World Begins From Answering Questions”, “Escape: When All Naruto Comes to Pirates”, “Me! Naruto! Six Hokage! The sixth emperor of the sea! “, “Comprehensive Comics: Unlimited World Games”, “Comprehensive Comics: Why Is Jia Yi Still Not Dead?” 》

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The supporting actor Jia Yi came to the Ninja world with the examination system, and pulled Xiao to organize everyone into the examination space to answer the questions. After a few rounds of answering, Jia Yi was horrified to find that the Ninja world had changed.

Because of the exam, Xiao organization is determined to rob the child and forms a group to brush Konoha.

Because of the exam, Vortex Nagato, together with Madara Uchiha, vowed to plant the red flag in every corner of the ninja world.

But no one in the ninja world thought that because of the exam, the Otsutsugi family merged all the eyes of reincarnation, triggering the taboo that would destroy the world.

The destruction of the ninja world was imminent. In order to find a way to survive, Jia Yi broke through the world wall and boarded the ship of the world, ready to escape to another world, but was discovered by ninjas in the ninja world by accident.

Helpless, he had to take the entire ninja world to escape, looking for a way to kill the taboo.

The first stop in the wandering ninja world – One Piece.

When the huge world ship came to the world of pirates, it happened to meet in the starry sky and escaped Aini Road on the golden ship.

Looking at the weird-looking Anilu, Nagato narrowed his eyes slightly: “You just said… you are also a god?”

- Description from novelbuddy