Naruto: The Life Changer - Chapter 86 -:

Is magic really a wish machine?

No! In a universe where magic actually exists, the ultimate nature of magic must be as simple and beautiful as the laws of physics.

This is the story of a mass-produced magic warfare tool man who learned the ultimate nature of magic.

But so what?

Just as a bird can fly without understanding aerodynamics, so a wizard does not need to understand the ultimate nature of magic to use magic.

Knowing the ultimate nature of magic does not mean that the tool man can become a great magician.

But the desire for knowledge is human instinct, and curiosity is the first driving force of human civilization. Humans hope to understand the inner workings of magic, even if it is supposed to be unreasonable.

An inquiry into the ultimate nature of magic, without any justification!

The story in the book takes place in an age where steel dances with gunpowder.

Here, muskets are in the ascendant, armor is still the protagonist, military theories are changing with each passing day, and innovations in systems and craftsmanship are emerging one after another. And this world has one more thing than ours: magic.

The world is undergoing earth-shaking changes, and no one can stay out of it.

- Description from novelbuddy

Huang Dan’s pain nerve is innately different from the ordinary people. A little tore in his skin can cause him to sweat all over his body painfully to the point of him unable to make a word out.

Somehow, he began to cross world, following Mr. System to do the tasks…

In the first world, Huang Dan realizes what it means to die painfully and to live to die again.

TL’s summary:
MC suddenly transmigrated and is bind to a system, requiring him to solve mysteries. Born with a higher degree of pain sensitivity, he met different people in the different worlds and learns what kind of emotion smiling is.

- Description from Novelupdates

What if being the protagonist was actually the WORST possible choice?Li Hanfeng thought he'd gotten the short end of the reincarnation stick—transmigrated into a cultivation world with “only” Upper Grade spiritual roots. Sure, he joined the prestigious Shushan Sect, but compared to those Heavenly Grade chosen ones? He was clearly destined to be a background character.Then his golden finger awakened.The Karma Detection System.Suddenly, Li Hanfeng could see the true cost of every “opportunity” before him. That mysterious cave everyone's excited about?[Great Karma: Ancient Tomb][Death Rate: 97%].The beautiful junior sister asking him on a “simple” mission?[Path of Destiny][Triggers: Sect Destruction, Heavenly Tribulation, Outer Domain Demons].Wait... being the protagonist means a 90% chance of horrible death?!NOPE.While other disciples fight over “destiny” and “fortune,” Li Hanfeng discovers something incredible: his system doesn't just detect karma—it “rewards him for avoiding it”. Refuse a death flag mission? Get premium cultivation pills! Skip the mysterious inheritance? Unlock rare techniques! Dodge the protagonist route entirely?His cultivation speed actually INCREASES.“Junior Sister, I'm busy that day.”“Senior Brother, that treasure isn't for me.”“Sorry everyone, I'll pass on saving the world.”[Karma Severed Successfully! Reward: Immortal-Grade Technique]But there's a problem: the more protagonist flags he dodges, the stronger he becomes. And the stronger he becomes, the more the world tries to drag him into main character scenarios.Ancient masters want him as a disciple. Mysterious beauties keep appearing. Evil sects mark him as a threat. Even his own karma system seems shocked by how overpowered his “background character” route is becoming.Li Hanfeng just wanted to cultivate peacefully and avoid death flags.Instead, he accidentally became the most terrifying existence in the cultivation world.The kind of person who's so strong that destiny itself has given up trying to make him the protagonist.

Zhong Yuhuan had transmigrated into a book and became the female supporting character who was destined to die an untimely and tragic death. Coincidentally, her family adopted two boys — the male lead and the villain of the book!

The male lead of the book would become a superstar in the show business and the villain a super successful and powerful businessman.

Zhong Yuhuan thus began her life of raising the male lead and the villain while faceslapping other scums. She would grow up quickly and live the life of the rich and powerful Mary Sue!

- Description from Novelupdates