Overpowered Villain Returnee in the Apocalypse - System is for Losers - Chapter 34: Revenge

An engagement paper to lock one’s destiny. With her family facing financial difficulties, she marries into the family of the richest man in Qingzhou as his wife. Her Mother-In-Law’s doubtfulness; her husband’s childhood sweetheart; her mean elder sister-in-law; her narrow-minded younger sister-in-law… Being inferior, Sang Wan withdraws without a choice. As time passed, she ended up being lonely and died tragically.

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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Outdated game streamer Fang Zhou was invited to a romance reality show, but he discovered that out of the five female guests on the show, four were his ex-girlfriends whom he had wronged.He told the pure school beauty: “You’re too innocent, I prefer someone more seductive.”He told the top-tier female star: “Your voice is too high-pitched, I prefer a natural one.”…Facing his abnormal ex-girlfriends, Fang Zhou originally just wanted to keep a low profile, but unexpectedly, the audience started shipping him with his ex-girlfriends.The live broadcast room’s popularity skyrocketed, each episode became explosively popular, and advertisements flooded in.Later, when the ex-girlfriends discovered each other’s identities, he was pressed into a small dark room, looking up at the women’s exquisite faces, and heard them say, “If you don’t behave, we’ll turn you into a specimen, so you’ll never leave us.”Fang Zhou: “I’m doomed, all my wronged ex-girlfriends have turned yandere.”

In a world where most wolves her age have already found their mates and embraced their destined roles, one she-wolf remains unmated—not out of bitterness, but because a deeper calling stirs within her. Haunted by a vivid dream that feels more like a prophecy than a passing vision, she begins to question whether her life was meant for more than becoming someone’s Luna. As her family pleads for caution, she stands at a crossroads: remain in the safety of the familiar, or follow the pull of fate into the unknown, where purpose, danger, and destiny await.