Crying Brothers: The Little Sister We Hate Is Actually a Bigshot - Chapter 2: Sister

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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A question I often ask myself, is the human desire for self-destruction never going away?

Travel through the endless apocalypse world, and find the answer behind every kind of demise!

- Description from novelbuddy

Jiang Xichu was Chen Man’s secretary for many years. There was an inevitable dispute in the workplace. On this day, she just had a big fight with Chen Man. Before she passed away, she was stabbed to death by a psychopath who retaliated against society. Not long after her death, Jiang Xichu learned from the civil servants of the underworld that Chen Man didn’t feel guilty and had embezzled her well-deserved salary. Even her funeral was held casually, her colleagues weren’t able to attend and give their condolences. She goes back into the world full of anger and was ready to frighten the heartless woman, Chen Man. When she arrived at Chen Man’s bedroom, she saw Chen Man held an urn full of her ashes, while slowly looking at her pictures when she was alive while looking haggard.

A year later, Chen Man also died. The cause of death: suicide caused by severe depression. Jiang Xichu left Chen Man’s home with a complicated mood. She wanted to go back to the underworld and ask Chen Man about it. However, after stepping out of the home, she was reborn again.

Once again in the world, general manager Chen made her breathless.

Jiang Xichu: …

You little actress girl, you play your two faces very smoothly!

- Description from Novelupdates

Young and filial Fu Ting loved her father above all things, so when she had the chance to turn things around from her father’s past, she promised to follow through her mission until the very end.Fu Ting, daughter of a famous actor, watched as her father succumbed to his untimely fall from stardom and his eventual passing. When met with her own demise, the heavens granted her something no one could only dream of⁠—time travel to amend her father’s murky past. Although Fu Pei was a⁠ supposedly⁠ cold-hearted young boy, he could not help but care for his daughter…wait. This is his daughter?!Read a tale of great love, unconditional devotion, and a sprinkle of comedy with us. Just a word of precaution: don’t underestimate Fu Ting!