Reborn: Rise of the Greatest Summoner - Chapter 568 Training [3]

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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Long Fei, a cross-timer and doujin, is an otaku who traveled to another world. In the original world, he was an otaku fan of Gundam and military science fiction.

He died in an accident and was reincarnated into another world. The Gundam works he had read before his death and the techniques in various military novels could be brought to another world.

How would he use the Gundam that Long Fei created? What waves can be caused in this different world?

Julian Sterling was the young master of the Sterling family, trained since childhood to become the most perfect heir to the Sterling Group. With his dashing appearance and a height of over 1.8 meters, Julian Sterling was almost regarded as the image of an ideal husband: wealthy, handsome, and talented. But who could have known that he was a person harboring a secret wish to become one of those small, cute boys who get carried and pampered like the bottoms in Boys' Love novels.That is right, it was Boys' Love - because our President Sterling only loved men. Perhaps it was because life in the Sterling family was too exhausting, with too much pressure, that he always yearned for someone to come and take him away.Maybe it was because the heavens had eyes, or his deceased mother pitied him too much, but finally, during a business trip, Julian Sterling lost his life in a car accident at the age of twenty-seven. Fortunately, his soul transmigrated into a Boys' Love novel - becoming the real young master with the same name and surname who had just been found and brought back to the Sterling family - a person about to be married off to the head of another tycoon family.Julian Sterling could not help but lament that everything was truly miserable, but luckily... he had turned into a small and cute boy now!