I Became a Sick Nobleman - Chapter 159: Second Line of Defense

In the world of Kyushu, players full of resentment gathered together, dripped blood as an alliance, and vowed to make the big devil go away.

For a time, all directions responded, the wind was surging, and everyone saw a better tomorrow.

Except for Lubei.

He is the so-called devil.

“Say I’m the devil, blame me for pitting you, I’m an NPC, how could I pit you, that’s how immortals are!”

- Description from novelbuddy

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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After getting hit by the truck, Luke was reincarnated as a target character in a reverse harem game.He was supposed to throw away his fiancée—the Villainess—and mindlessly follow the Protagonist.A side character he was destined to be, however, even if Luke accepts his fate as a side character, he cannot let the Villainess meet with the same dead end.-----------Additional tags: No yaoi, no yuri, no NTR. Obsessive character, possessive character, solo-romance, no harem, early romance, possible lemons.