MTL - I Help the Richest Man Spend Money to Prevent Disasters - Chapter 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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Solver Keter, one of the Five Lunatics of Lawless City, regresses to when he was the illegitimate son of a doomed archery family.“If I regressed and couldn’t even save my family, I might as well go kill myself.”For my family? No, for my freedom!

“Your stats are lower than that of your average person.”

The weakest by a mile among the otherworldlers of class 1-A, Takatsuki Makoto.

The Heroes and Sages who had cheat skills in his class had went off, and the base set lifespan is 10 years?

The Great Demon Lord is going to revive soon?

I am a Mage Apprentice?

Isn’t the balance way too bad? This damn Isekai is a tr*sh game!

“Want to be my believer?”, the Goddess that told me this has zero believers!

Aah, this is bad…I don’t think I can clear this. The Goddess with zero believers is an incredible beauty, and she is telling me she is imprisoned somewhere and is waiting to be saved. My last and hardest mission is to save the Goddess.

Clearing this Isekai that only has adversities, the story of the weakest mage.

Traversing into another world, Zhang Xuan finds himself becoming an honorable teacher.

Along with his transcension, a mysterious library appears in his mind.

As long as it is something he has seen, regardless of whether it is a human or an object, a book on its weaknesses will be automatically compiled in the library.

Thus, he becomes formidable.

“Emperor Zhuoyang, why do you detest wearing your underwear so much? As an emperor, can’t you pay a little more attention to your image?”

“Fairy Linglong, you can always look for me if you find yourself unable to sleep at night. I am skilled in lullabies!”

“And you, Demon Lord Qiankun! Can you cut down on the garlic? Are you trying to kill me with that stench?”

This is an incredible story about teachers and students, grooming and guiding the greatest experts in the world!

- Description from Novelupdates