Snowstar

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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Author's current works: War Online, My Soul Card is a Reaper
Author's other notable works:  The Last Slytherin, The Sharingan Hyuga
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You can also support the Author through Patreon or buy coffee on Ko-fi.com

https://www.patreon.com/snowstar

https://ko-fi.com/snowstar5061

Weapon seller in the world of magic

Two more days passed away in a blink of an eye.

In the master bedroom of the first floor's residence, Mark was staring at the land deed he received from the Emperor and let out a long sigh.

"80 acres… It's more than 3 million sq. ft of free land. Even in my dreams, I never imagined holding such a huge property. But, I didn't understand why the Emperor was too generous. If he wants the attack helicopters, he could just ask and offer an amount. I guess he doesn't want a rejection?

Well, it doesn't matter as long as I can unlock more powerful weapons within 5 years. Until now, I have yet to unlock a copper-graded firearm. There is no single big sale in the past seven days and at this rate, how long will it take?

I'm really becoming lazy after becoming rich. I guess I really need to open the branches to improve the sales."

A mysterious spy