After my divorce, I started to have good luck - Chapter 889 - 476: Learning to Subtract

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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God gave me one more chance and finally came back after four hundred years.

As soon as I realized I returned, I decided that ‘no one should have pride.’

My goal was to destroy the country. So, I grew up with a genius prince who lived in hiding before returning.
He took up the empire for me and I left him for him to achieve his goal.

‘I came to pick you up Charlize Ronan.’ Dylan, who became a perfect tyrant after a few years, found me after searching all over the continent.

‘Why did you flee and run away?’

Kenichi Yamada was a 35-year-old salaryman. As a hardcore game enthusiast, he was saddened by the modern trend towards casual games.So, when a site claimed to be “for people who like to do things the hard way,” he just couldn’t resist. Thus, he was reincarnated into another world as Allen, playing on Hell Mode.This is fantasy light novel about Allen’s journey as a summoner.Reincarnated as a serf, he starts from nothing.His journey begins with absolutely no knowledge of the world around him, just like those games he played 10, 20 years ago.

Mason was a mercenary, until the day he died on a mission after being betrayed by his unit.