Reincarnated as an Apocalyptic Catalyst - Chapter 42: The First of Many

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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System: “Host, let’s brush the protagonist’s favorability!”
System: “Host, stop! Stop for a while! You’re walking crooked! That’s not the case!”
Yu Shisan: “As long as it’s goodwill, it’s fine.”
System: “But the protagonist… you’ve all been bent by you!!!”

Yu Shisan comes with a halo of pretense, and his favorability level rises. The style of painting is flat and cool, each world is short, and the sixth or seventh chapters are over.
There are all kinds of plots in the campus ghost palace fight

ps:

1. The female protagonist brushes the favorability of the protagonist in the original world, love, family and friendship are all favorability degrees

2. Do not like x Some worlds are okay, some are not well written, if you see a world you don’t like, just look at another one.

I was very talkative when I wrote this… This is the first pit… The style of writing two years ago

High school student level…considerate…
Thank you all for your support and encouragement! Love you guys!

- Description from novelbuddy

It is the day of her long-awaited debutante at the age of 15.

Marshallie Gracis, a Viscount’s daughter, witnesses her own fiancé kneeling before another woman and begging for her love.

She was saddened by the unexpected scene of the affair, but her fiancé offered no excuse or apology. She thought the engagement would be broken off, but it wasn’t even that, and the next thing she knew, 10 years had passed without her being married…

25-year-old Marsha had given up on the idea of getting married to become the queen’s maid of honor.

……………………………………………………………

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Arakawa Kouki is reincarnated to a Japan with a different history than the Japan he knows with the memories of his previous life still intact. Kouki was discouraged, “Aren’t reincarnation stories supposed to be at some fantasy world filled with swords, magic and elves?!”