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

Ark Prime didn't hesitate to switch to panic mode as soon as he found his comrade fell down to the sword of the enemy in one move.

Ark Prime has Gravity control, and Ark Secundus has spatial powers.

Together, they worked on stalling the enemy, not by facing head-on separately but by merging their energies to create bigger attacks.

As Ark Prime placed his hand on Ark Secundus, supplying him with inexhaustible amounts of energy at the behest of damaging his core, the latter managed to activate the strongest skill he inherited from Mark, the Singularity.

However, Ark Secundus' Singularity is different from Mark's. Unlike Mark, who activates it at the center of his palm, the robot activates the skill using its core.

The singularity radiated a wave of immense energy, creating a whirlpool of pulling force that threatened Xie Tianyu's life.

Xie Tianyu's Attack at the factory (part-2)