MTL - Super Soldier - Chapter 3 Blood debts must be sacrificed with blood!

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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Yun Yuwan carelessly lost Wen Yangzhi's letter, but the foreign butler assured her with certainty, “That was a love letter.”She had been secretly in love with Wen Yangzhi for many years, and upon learning it was a love letter, she returned home overnight.Clutching the hope that he also liked her, she began to respond.At the dinner table, he said, “Come sit here”She ended up sitting on his lap, dressed in suit pants.When he renovated his newly bought villa, she playfully said she didn't like the crystal chandeliers.Some time later, his assistant told her:The letter Wen Yangzhi had sent was not a love letter at all, but a nine-figure check, intended as a birthday gift.The assistant laughed distantly, “Director Wen can't even be bothered to buy gifts, how could you think he liked you, Miss Yun?”—Long afterward, when Yun Yuwan brought up the incident with shame,Wen Yangzhi didn't reply, he just sparked his lighter, a tiny flame dancing on his handsome face, appearing indifferent and aloof.He never said it wasn't a love letter,Not all love letters contain sweet nothings,At least Wen Yangzhi's didn't.He wouldn't do something so cheap and insincere.Knowing that the men who approached her were after her money.He simply wanted to tell her.Her bit of money, he didn't care for it.—A nine-figure check expires in ten days, I've waited for you for ten years, undying affection still clouds my senses.—Self-loving, beautiful heroine x man whose bark is harder than his biteIndependent brand florist x pioneering bankerTheme: Adults don't deal in pretense

To rise from defeat; to revive amidst the dissipation.

As his contract-marriage wife, she just wanted to fulfill the mission given by his mother—having a baby. They didn't love each other, so he always used contraception before they got laid. She had been obedient to him, only to find that he had gone too far! He actually didn't care about their child at all! She couldn't stand it anymore, so she handed him the divorce papers and left, noting: “The world is so huge that I can surely find a better man.”Looking down at her, he retorted, “Come on, your purse strings will tighten up first before you find anyone.”