Side Character Transmigrations: The Final Boss is No Joke - Chapter 200

– The planet [Earth] has entered the abnormal state [Apocalypse].

I died in my world… and woke up in someone else’s story.But not as the hero. Not as the villain. Not even as a side character who mattered. I’m… an NPC—a nobody, a background observer, invisible to everyone.At first, I thought I was powerless. But then I discovered something strange: I could leave notes, whisper hints, move objects… small nudges that subtly changed the story. Every tiny action rippled through the plot, shaping outcomes, saving lives, and altering the fate of heroines, heroes, and even villains.The catch? The story is alive. It resists interference. Push too hard, and accidents happen. Plot twists turn against me. Minor disasters loom. The more I try to influence, the more the story fights back.So I play carefully. I study. I manipulate quietly. I watch the heroines, heroes, and overlooked side characters, weaving invisible threads that guide them. I don’t fight. I don’t cheat. I survive—and maybe, just maybe, I can change the story from the shadows.From an unnoticed NPC to the hidden hand behind the world, I’ll prove that even a nobody can rewrite the story.

She is an international ace agent,An amazing doctor, God of Assassination, However due to a box she accidentally rebirthed and became an ordinary junior high school student. Weak and incompetent, That scum woman wants to put her head into the toilet. The gambling father, borrowed a lot of money and now they are being chased by loan sharks for debt? There is also a group annoying people in her life. The reborned Yunxiao sneers: I want to know how to write the dead words! She returned from the wind, high-profile attack, if people dared to bully me, they are courting death!

Leon was a robotics engineer with a bright future—until he was run over by a military truck and killed on the spot. But death wasn’t the end. Thanks to a cosmic glitch and to an idiot, Leon wakes up in a new world, reincarnated as the son of a minor noble family guarding the wild frontier of a massive Empire. With his intact mind, enhanced brain, and a world begging for progress, Leon sees opportunity everywhere—one that he will grab for sure.But not everything will go smoothly. Monsters come over in the winter, the Empire monopolizes magic and technology, and society clings to barbaric ways. Refusing to accept the status quo, Leon decides to reshape his family’s backwater territory into a land he would enjoy living in. Armed with knowledge from his old life, modern problem-solving, and an irreverent attitude, he plans to revolutionize his territory. But in a land where magic is rare and unknown to ordinary people, he knows he’ll need more than blueprints to succeed. He will need his own wizards and witches...Hey-ho! Welcome! I thought I need to add some information to those who want to know if they should just skip it or not: First, I ain't planning to introduce world-changing, thought-provoking ideas here. It is all for the plain and simple reason of having some fun. What you need to be aware of if you need more details:- Yes, this is an isekai story. No, there are no 'cheats' or systems involved with gaining skills. He is just a guy reincarnating with a gene-modified brain, so it explains why he can remember things and be smart. That is it. Think of it as him having a perfect memory. If you perceive confidence as arrogance, you may very well dislike the MC right off the bat. He is not someone who will lay low and try to blend in when his territory is the most backward and abandoned place in a vast Empire. Where the throne is so far away, messages take months to go back and forth.- The story mostly focuses on kingdom-building stuff and slice-of-life elements, not on conquest or curb stomping others. The main conflict will be centered around wars, yes, but it won't be one guy vs. the world or something like that. Magic is going to play a big role in building up the territory, as I plan to branch out into magic technology later on. I am going to rely heavily on magic because I am mostly a fantasy writer and not an engineer.- The MC's main goal is to enjoy himself. This also means girls. So there will be a harem. Those who are familiar with my works, how I do groups, and how my characters act will know I don't like doing cardboard cutouts of characters. Most of my stories have more than one character accompanying the MC. The same will be true here, with the extra caveat that they will also be involved romantically with the MC. - The story plays out in a 1st person POV. There won't be jumping around multiple POVs; I don't like that. Only when the story requires it and the MC can’t be present by himself for some story parts.- Don't take this story seriously nor look for scientifically 100% real and codex-like solutions for problems. This is a fantasy world, a totally different culture, and with history, that is NOT OUR world! There is magic here, and the MC has a supercomputer for a brain. I think that says it all. - My main goal is to enjoy writing some whacky but real-sounding scenarios. They will be based upon feasible ideas, but I am not writing a damned textbook about thermodynamics. Laws will be bent and broken when the story needs it.- Regarding smut, there are some chapters with erotic scenes, but not every other chapter. So expect it when the mood is there in the story and not because I must cram as much snu-snu in as possible... That won't happen.- No guns. Why? Every similar story has guns. This doesn't. This has mechs and power swords. Why? Because I said so.