After rebirth, I rejected the rich yandere lady - Chapter 31 - : Without being a sycophant, you won’t have weaknesses.

When a fantasy kingdom needs heroes, they skip the high schoolers and summon hardened Delta Force operators.Lieutenant Cole Mercer and his team are no strangers to sacrifice. After all, what are four men compared to millions of lives saved from a nuclear disaster? But as they make their last stand against insurgents, they’re unexpectedly pulled into another world—one on the brink of a demonic incursion.Thrust into Tenria's realm of magic and steam engines, Cole discovers a power beyond anything he'd imagined: magic—a way to finally win without sacrifice, a power fantasy made real by ancient mana and perfected by modern science.But his new world might not be so different from the old one, and the stakes remain the same: there are people who depend on him more than ever; people he might not be able to save. Cole and his team are but men, facing unimaginable odds. Even so, they may yet prove history's truth: that, at their core, the greatest heroes are always just human.

This is the novel behind the TV series, “Love Like the Galaxy”.
The following synopsis is based on the TV Series.

“The young Cheng Shaoshang was left behind because her parents had gone off to fight in the war. In order to protect herself from her scheming aunt, she had to be extra diligent while pretending to be the opposite. However, years of estrangement have made it difficult for them to become family again.

Lacking love her whole life, Cheng Shaoshang is both pragmatic and insecure in choosing a partner for marriage. She encounters three men – the emperor’s adopted son Ling Buyi, the talented Yuan Shen of Bailu Mountain, and the aristocrat Lou Yao who each have their pros and cons. Although the road to love is bumpy, she never regrets every choice she makes. Through her interactions with Ling Buyi, she unintentionally becomes involved in the mystery surrounding his family and his identity. The two grow from their experiences and worked together, upholding the righteousness in their hearts to resolve a national crisis.”

- Description from Novelupdates

After Lin Xu died, she discovered that the world she was in was a novel.Her eldest son liked to imprison the female protagonist of the novel, engaging in sinister villainous acts with a dark room play.Her youngest son would unfailingly draw substitute’s blood and snatch substitutes’ kidneys for the female protagonist’s legal antagonist — his unrequited love.Her only daughter was the romantic fool forever revolving around the male protagonist of the novel.If children are not disciplined, the mother is to blame. After being reborn, Lin Xu felt she should step in and discipline her wayward children.However, before she could take action, her eldest son’s dark, handsome, and usually cold face blushed slightly as he asked in a low voice, “Can I touch my head?”The middle son snorted and turned his head, his tone petulant, “I… I don’t want to go home, but if you insist, I’ll do it begrudgingly.”The youngest daughter rushed over, mercilessly pushing her brothers aside, “Mom, come and teach me how to solve this problem~”Latter, both sons fought over the bowl of noodles Lin Xu cooked. What was a novel’s female protagonist? Nothing compared to their mother.The daughter transformed herself, letting nothing from any novel’s male protagonist interfere with her studies!The family was blissfully happy.Latter, the revived, amnesiac husband suddenly appeared, cornering her against the wall, his eyes full of struggle, “Even if you’re married, I still love you.”Lin Xu pretended to be serious, “Is that so, then what should we do?”He hugged her tightly, his voice muffled and pained, “Divorce him!”Lin Xu chuckled secretly, “I’ll divorce him right away.”Latter, after the husband regained his memory, he said through gritted teeth, “Over my dead body will we divorce!”

Weary reader, it is an honor for you to choose this book in this heavy, dark library room.

Somewhat sadly, the book is sick.

Your fingers should be able to feel the raised growths on the surface of the book cover,

The words written in the old days are like parasites rooted in the pages of the book, hoping that someone can observe their wriggling,

To feel, to analyze, to touch the story of the disease.

If you insist on borrowing this book, be sure to check your physical condition regularly.

- Description from novelbuddy