The villainess shall be mine - Chapter 150 Testing

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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[Hello everyone, my name is Amamiya Ren. This might seem like an abrupt self-introduction, and honestly, I think so too.][In fact, when I first heard my own name, I had a bad premonition. Fortunately, I didn’t encounter Shido Masayoshi or Akechi Goro.][But when I discovered that the high school I was going to attend was called Teitan High School, I knew I was in trouble.][I thought I had successfully avoided the traitor, but I didn’t expect that I couldn’t escape the god of death either.][Then, as I dug deeper, I found out more information that made my heart race.][I learned about Shinomiya, who is as renowned as the Suzuki family, and Sanzenin, which surpasses both Suzuki and Shinomiya.][But none of that is the main point. It’s Teitan High School alone that made me want to start writing a diary.]Putting down his pen, the boy turned his gaze to the prize pool.Naruto, Bleach, One Piece, Katekyo Hitman Reborn, Negima! Magister Negi Magi, A Certain Magical Index, Persona, Demon Slayer: Kimetsu no Yaiba, Marvel, Genshin Impact, Fate, High School DxD, Lord of the Mysteries…---All rights to the original content belong to their respective creators.Cover Pic: By akeisae, let me know in the comments if you want me to take it down.

Waking up from a hangover, Wang Hao finds himself reborn in an alternate world. To his delight, he realizes that he has a system to help him in this new world. However, his system turns out to be a highly unconventional one. Instead of serving justice and winning the respect of other people, Wang Hao has to do all kinds of bad things in order to make use of the system. So, Wang Hao embarks on the journey to being cursed for good…

When I died I meet with this being who offered me a new chance at life, to actually become someone important and I agreed and was reborn as none other as the First Man.But to think that everything that I ever knew was nothing more than a lie, what am I going to do to survive in such a world?