Harem System: Spending Money On Women For 100\% Rebate! - Chapter 13: Mrs. Jones...?

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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[No fixed CP + wear books + brain hole cool text + women disguised as men + group pet]

Gu Lan crossed over and became the cannon fodder of the original book disguised as a man, counterattacked the protagonist of the original book who slapped her face, and lived in a dormitory full of sickly beauties.

Until one day, she discovered that her roommates were villains from other horror novels. After discovering the secret, Gu Lan thought she would be killed, but her roommates all looked at her strangely… Contrasted with cute Zhengtai, sickly and beautiful boy, split personality school girl, cold and stern school bully, romantic and noble son who plays Shura every day field.

- Description from novelbuddy

A decision can destroy the sun, moon and stars. A finger can kill the Heavenly Overlord. While chatting, the Heaven and ten worlds can be annihilated.

A poor little kid walks out from a remote mountain area while holding the Nine Dragons and the Incredible Cauldron. With a control over the time and space eternally, he embarks on the Path to God where he defies the odds of the boundless universe gaudily by fighting against royalty and clashing with the legendary generation.

- Description from Novelupdates

[Ancient Setting + Light-hearted Comedy + Strong Female Lead + Coming-of-Age Heroine + Ensemble Cast + Political Intrigue + Patriotic Themes]Chu Tianjiao is the eldest daughter of a prestigious military family. In her previous life, she devoted herself to fighting for her country, but after death her soul was trapped in the imperial ancestral temple, unable to be reincarnated.She spends her days chatting, joking around, and enjoying a sort of posthumous glory with a group of royal ancestors.Once a novice at palace intrigue, she learns many things from these imperial forebears. Some teach her poetry and rhythm, others force her to memorize medical texts daily, while the rest regale her with stories from which she gleans the arts of political maneuvering and maintaining balance of power.The heroine grows stronger with each passing day.One day, a fire breaks out in the ancestral temple. The heroine leads the group of ancestors back to the present era.These ancestors were all emperors and empresses in their past lives. Their change in status after being reborn leads to all sorts of comedic situations.But your ancestors are still your ancestors, after all.Each possessing unique skills, they help the heroine crush her enemies and slap faces, vowing to change the fate of national ruin and family destruction from their previous lives.The heroine gradually sheds her rash personality from her past life, embarking on an unstoppable path of dominating the world.