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

It was only a moment ago the princess was talking about the elder of the church of doom who helped her in finding out the truth.

And suddenly, this person is here at the abandoned church, standing before everyone, and that too, came uninvited. People who think it is just a coincidence were fools.

As the princess confirmed her identity, the latter dismissed her staff and said, "Relax, I came in peace."

She then turned her body towards the King and bowed with her left hand on her chest, "Greetings, Your Majesty. It appears that you are great in health and even had your cultivation restored, not that I expected considering you were sealed by none other than Elder Liao."

She then turned her head, this time, toward Mark with a curious look, "Forgive my rudeness but are you the one who broke the seal?"

Mark furrowed his brows in response, "for someone who appeared out of nowhere, you sure ask a lot of questions without even introducing yourself."

Gu Ya, a Seer from the Church of Doom