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

As Shang Fu was discussing their next course of action at the border of Western Yan, meanwhile, at Genesis  Weapon Store, Imperial City;

Despite there being no customers for the past few days, the store was still kept open so that people know Mark is at his house.

Usually, he sits at the counter and chats with his fiancée but right now, he is in his room. Of course, he wasn't sleeping.

Mark was staring at a specific item in his inventory and wondering whether it is really okay to destroy it just because he hates the Imperial family.

"The weapon is bound to Shang Fu. So, it can never be mine to use. It is quite possible that the weapon could escape the moment I let it out of the inventory.

To sever its connection with Shang Fu and forcefully bind it to me requires a billion credits. I don't have such an amount of money to give to the system. Even if I have, I wouldn't still do it. This bow is not just worth it.

Weapon Transmutation