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

"I didn't know that the enemy is a pseudo-demigod." Lai Peng had panic clearly written on his face and he put aside his pride as a supreme realm Spirit Warrior to beg the gold dragon standing beside him.

The attack will reach them in about 30 seconds and he felt there was enough time if the sect's guardian beast makes another move.

However, the gold dragon only scolded him in return for his ignorance, "Pseudo demigod? Are you that much of a fool that you lost all of your senses?" It roared.

"What do you mean? Don't tell me that the enemy is a demigod…" As Lai Peng didn't properly understand the words, the gold dragon shed light on the matter. "There are five elements in that sphere coming at us. Don't you understand what that means? There's only one being with the power of a demigod and mastered all the basic five attributes."

It is a warning shot