Fate: Hero of Justice Takeover - Chapter 16: The Declaration of War

A Deadly Secret, also translated as Requiem of Ling Sing and Secret of the Linked Cities, is a wuxia novel by Jin Yong (Louis Cha). It was first published in the magazine Southeast Asia Weekly (東南亞周刊) and the Hong Kong newspaper Ming Pao in 1963. Its original Chinese title was Su Xin Jian before Jin Yong changed it to Lian Cheng Jue. The story revolves around the adventures of the protagonist Di Yun, an ordinary young peasant, who is imprisoned after being framed. In his quest for vengeance, he accidentally acquires the Liancheng Swordplay manual (連城劍谱), an ancient artifact not only prized for the skills detailed inside, but also for containing a secret leading to a treasure.

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

I belong to a good sect that has never turned its back on me for my poor potential, has never forced me to study martial arts, and even helped arrange a betrothal for me when I was young.

My fiancée is a much renowned hot-tempered young miss. She’s beautiful, strong, and deeply loves me. Upon my start down the path of the Jianghu, I entirely relied on her to provide cover for me and before long, I became renowned as the #1 Pretty Boy of the Immortal Path.

Yet one day, I discovered that this person is apparently a man. A man in drag!

More unforgivable is that he thought I was a woman dressing as a man!

Me, as if my liver and guts are being cut to pieces: “Brother, what have you done with my fiancée?”

Him, as if a knife has been twisted in his heart: “Brother, what have *you* done with my fiancée?”

The waters of the Jianghu are indeed murky. Even if I am starving, even if I’m dying far from home, from this point on, I will not eat even a mouthful of rice prepared by him.

—So fragrant.

- Description from Novelupdates

Reborn as a sword, he lived for hundreds of years, and then he occupied the body of a 15-year-old prince.