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.
***
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.
**************
Author's current works: War Online, My Soul card is a Reaper
Author's other notable works:  The Last Slytherin, The Sharingan Hyuga
**************
You can also support the Author through Patreon

https://www.patreon.com/snowstar

Weapon seller in the world of magic

Mark shot a glare, a silent 'Are you kidding me?' Sylvandria promptly backtracked, stating, "Of course, you're not. Otherwise, there wouldn't be drama back in our homeland. Plus, there's no way the Heavenly Palace would allow you to stay in the mortal plane." Her words clarified the situation, retracting the initial doubt.

"Heavenly palace?" Mark looked at her, asking for clarification.

The rest stayed curious as Sylvandria explained, "It's a decree from the Heavenly Palace, governing the universe. Saints are forbidden from entering the mortal plane because their existence poses a threat to us. A Saint could supposedly end all life on a planet by absorbing its life force." Her words shed light on the gravity of the decree, emphasizing the danger Saints represented to mortal life.

The Grand Auction (part-11)