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

A gigantic wave was approaching the island at a speed of about 150 km/hr. Lan Ju and Mark were waiting at the beach to face it.

Soon, it struck both of them and then washed away everything on the island that is on its path. Thousands of small fishes and other aquatic beasts crashed onto the island.

Lan Ju was not only unharmed but also didn't move an inch from the spot.

As for Mark, who wore the Exo suit in order not to waste his defensive skills and ether energy, he was pushed away atleast for a hundred meters before the water retreated to the ocean. He was of course unharmed.

However, his attention was on the house with the barrier as it was also hit by the wave. Seeing that there were only cracks in the barrier, Mark let out a sigh of relief and rose to his feet.

Meanwhile, Lan Ju's focus was on the ocean. His senses were at their peak but couldn't sense the enemy no matter how far or how deep he searched.

The Trial of the Holy beasts (part-1)