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

His expression hardened as he continued, "Running away from home and staying at an unmarried man's home; do you know how it will affect our clan if the word is out? If not for your father spreading a rumor that you were abducted, the consequences would have been dire.

I can assure you that from here on, no one would dare to force you into a marriage against your wishes but you have to apologize to your father."

"I…" Song Yue doesn't know what to tell him. She knew that she did the right thing but at the same time, she can't refute his words too.

As a look of hesitation appeared on her face, Mark interrupted their conversation,

"Smoke generates because of the fire, Mr. Song. You cannot blame the smoke that suffocated the people who inhaled it when the real fault lies with the fire."

"Hmm?" Song Tai took a glance at him.

Song Yue's decision