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

"What the hell is that?" The soldiers in the front went into a panic state as soon as they saw the Battle Tank, which is even bigger than the blue drake, the Commander is riding.

A Captain, on the other hand, fell on his butt in shock. More than 3 weeks have passed since the Song Clan incident, so, the rumors about a huge carriage-looking puppet that can move and attack its own slowly died down.

But, Captain An Se was there at the Song Mansion and knew how dangerous this battle tank is.

And when he saw it at super close distance, especially the long cannon, his heartbeat spiked up, and lost strength in his legs in fear.

After all, the Battle Tank is not only strong enough to kill 5-circle but even send a 6-circle realm Mage like Song Yun into a coma with just a single attack. On the other hand, he's only at 4-circle. That makes the Battle Tank more terrifying to him.

Commander Bai visits the store (part-2)