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

https://www.patreon.com/snowstar

Weapon seller in the world of magic

Even though the Snow Fox is a beast belonging to a very rare ice attribute, its strength is still in rank-3 and could contest against a 4-circle realm expert when it doesn't use any skills.

In normal situations, it was something that can't be feared but when facing the bandits where most of them aren't even Spirit Warriors, it was invincible.

Mark didn't stop there. To intimidate them further, he summoned the thunder lion.

Each of them will drain him about 1000 ether points per minute but at present, he possessed enough ether energy for them to sustain long.

As the bandits were taken by the sudden turn of events, Mark spoke, "I'll just give you one breath of time. Either scram away or kneel on your spots. Those who tried to resist will be killed."

In a fraction of seconds, all the bandits decisively fled away in different directions including the captain that aimed the revolver at Mark's head earlier.

Kunyu bandits (part-2)