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 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 and Allen came as the guests of the palace. Then, both of them allegedly went out for a city tour early in the morning but Mark returned alone for the lunch.

Then, Mark left with the princess, and hours later, the princess tells her mother that she finds the real king and warns her to come and meet them in a city that is nearly 150 kilometers away.

And when her mother attends the secret meeting, she sees two mysterious people standing behind the princess and the King. Most importantly, she couldn't sense the cultivation realm of either of them just like with the royal guests.

As long as one isn't a fool, it is easy to link up everything and guess the identities of the masked men. The Queen and the impostor King quickly recognized them.

Mark also knew the possibility of getting found out. The princess had told him that when he wore the mask.

And yet, he still bothered himself to hide his identity because of three reasons.

Attack first and then negotiate