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

Mark glanced up, puzzled. Before he could ask, Aerynith nudged him. "Pick something," she whispered urgently. "That's the prestigious Soul Weapon Scroll. Only the sect's most elite disciples are granted this opportunity."

Mark's grip on the scroll tightened. "Any weapon I want? Will it create it for me?"

Lan Yuxuan's expression remained composed. "Yes. Lan Xia requested this on your behalf, ensuring you have a fair chance in the heir trials."

Just then, a familiar notification pinged in Mark's mind.

Ding! Presence of my Creator detected within the scroll, Master

Mark's eyes flickered. Ark, his artificial intelligence, had sensed something.

(Ark, what do you mean?) he asked internally.

*Ding! It's likely created by a fragment of a Creation Orb with the weapon creation magic.

Mark hummed in thought, then turned back to Lan Yuxuan. "Can this really create any weapon I imagine?"

A stalker?