MTL - For Thousands of Years, My Weakest Brother Has Become a Demon King (1000 Years Later, Even My Weakest Follower Has Become A Demon King) - Chapter 260 flaw

She thought heartbreak was the hardest battle she'd ever fight. Ending a five-year relationship in 2024 nearly broke her, but she rose anyway. By 2028, she’s everything she once dreamed of becoming. A bestselling author, an admired high school teacher, and a successful businesswoman. But behind her perfect image lies a dangerous secret. She’s also one of the most feared underground hackers in the cyber realm.Then one night in City X changes everything. A book signing. Too many drinks. A stranger with a voice like sin and eyes full of danger. The next morning, no memories, a blurred signature, a hotel room, and a man’s touch she can’t forget. Back in City C, she tells herself to move on. Until someone knocks on her door. And the man from her forgotten night says the words that turn her world upside down.“I’m your husband.”He’s younger, commanding, and far from ordinary. A soldier from a secret military unit hidden in the shadows, where forbidden experiments and enhanced beings redefine humanity itself. Now bound by a contract marriage, they’re forced into a world of covert missions, coded lies, and a war between love and survival.She’s a hacker who steals secrets.He’s a soldier sworn to protect them.And when their worlds collide, love becomes both a weapon and a weakness, the only thing powerful enough to save them... or destroy everything they stand for.

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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Ye Xuan transmigrated back to when he was an infant cuddling in the embraces of his nine older sisters. He activated the God-tier Sign-in System.

[You are hugged by your eldest sister, who is the COO of a financial conglomerate. You signed in and obtained RMB100000000.]

[You are fed medicine by your second sister, who is crowned the God Hand. You signed in and acquired god-tier acupuncture skills.]

[You trained along with your third sister, who is a Martial Arts Grandmaster. You signed in and your overall physique improved.]

[You live-streamed with your fourth sister, who is the top news anchor in the country. You signed in and acquired extraordinary good looks.]

……

Ye Xuan could sign in daily!

After staying in the city and signing in for eight years, Ye Xuan had accumulated an astronomical amount of wealth and become a billionaire.

On his eighth birthday, his nine sisters were forced by the grand elder of their clan to get married. Just when everyone had lost hope of turning things around, Ye Xuan hopped down from his eldest sister’s embrace and said, “You’re marrying my sisters off against their wills. Have you consulted me about this?”

A 34-year-old NEET otaku, chased out from his house by his family, found that his life is reaching a dead end. He then recalled that his life could actually have been much better if he had made better choices in the past.