Weapons Seller in the Wizarding World

Mark is a talented military weapons designer who is kidnapped by a mafia gang after refusing to work for them. They forced him to design a unique weapon for five years, until one day he managed to escape only to be shot dead by his trusted comrade. *Tripod! You awaken a weapons system. When he opened his eyes, he was in a different body, a different world. "You want to kill a wild boar without being detected? Forget about bows and arrows. Here, I introduce you to this sniper rifle. "You want to kill a bunch of goblins from the sky? Forget those flying carpets and brooms. Here I introduce you to fighter jets. "You want to kill the dragon? Forgot to accept the help of the S-class adventure team. Here, I give you a nuclear bomb. Join Mark Spencer/Lu Zhen as he brings the entire world to its knees with the help of his weapons system.