MTL - Unexpectedly, I Traveled Again and Again - Chapter 613 [Weakest] and [Strongest]! [Hope] VS [War…

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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[Female Protagonist Synopsis]:Mia Ginger experienced a trial marriage.Before the trial marriage--Dad said: “Koa Jackson is a postdoctoral fellow, watch your words and deeds.”Mom said: “Since you don't like him anyway, why not let your sister have him.”Brother said: “Shameless, stealing big sister's beloved.”Sister said: “Why didn't you come back a month later!”Mia Ginger didn't understand, she was already seventeen years late, late enough that the whole Ginger Family completely forgot her existence, late enough that the adopted sister occupied seventeen years of affection, late enough that the man she was betrothed to almost became someone else's groom, how much later should she be?Mia Ginger curved her lips: “Grandpa Jackson, I will strive to be worthy of Brother Jackson.”She thought it was out of spite, unaware that upon meeting him again, she discovered he was the big brother lingering in her heart for nearly ten years.At two years old, she got lost, falling from a Rich Family's Daughter to a street beggar, picked up and raised by a masseuse for seventeen years, and upon returning home, she was determined to become the first socialite in upper-class society.[Male Protagonist Synopsis]He is Koa Jackson, the third son of the Jackson Family, elegant and upright, with outstanding looks, the youngest neurosurgery professor in the domestic medical field, known by all.Simply because, at twenty-seven, he remains single.All young ladies want to marry into the Jackson Family, unaware the nobleman was betrothed since birth.In his entire life, he need only remain pure, waiting for one girl to grow up.Before the trial marriage, Koa Jackson had seen his future bride twice.The first time, he was eight, she was eight months. He stood by the bed watching her crawl with her little bottom, finding it amusing, he wrote his name on her sole and said with a smile: “Brother will stamp you.”The second time, he was eighteen, she was ten. He stood by the road watching her sneakily stealing, feeling pity, he took her hand and gave her a hundred yuan, helplessly saying: “Not stealing is a good child.”He's always remembered the first time, long forgotten the second.Unexpectedly, the little girl whose foot he tickled at home always regarded the second time as her life's salvation.[He couldn't partake in her turbulent past, but wholeheartedly takes on her prosperous future; companionship is the most touching confession.]

On a normal boring day, a message appears, inviting him to a Tutorial.

...Sneak Peek into a chapter...