Rise of the Harem King - Chapter 2: Fuck you

Finding himself in an Last Airbender without an airbender around, a transmigrator waterbender goes on an adventure to stop the worst from happening to him.

Tired of the intrigue in the big city and the face of the boss, tired of working overtime every day and earning thousands of dollars, Zhou An returned from the big city to the small fishing village where he was raised, and lived a leisurely life!

Plant vegetables, grow flowers, and thousands of acres of fruit trees!

Walk the dog, feed the cows, the ranch is thousands of miles away!

Deep sea seafood, shallow sea fish, fishermen catch!

Cultivating mountain streams, grazing cattle and sheep, and fragrant fruit trees!

In the bright spring, the teenagers wandered freely, and Zhou Ande was surrounded by mountains and rivers, and lived a leisurely life!

- Description from novelbuddy

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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The opening of Pandora's Box changed the world, giving rise to an age of superhumans and monsters. Yet mankind was not safe from its own hubris, and in the end, it destroyed itself. It's the end of the world, but Sonya Chernovna has been given a chance for a redo. With her memories of the world to come and her deep hatred of the society that had risen out of Pandora's Light, Sonya sets out to change the future.Even if it means being the most heinous villain that ever lived.--Chapters release on Monday-Friday with side stories sprinkled throughout.