MTL - Poison Doctor Demon Consort - Chapter 242 , direct cave room!

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 happens when a scientist from a futuristic world reincarnates in a World of Magic and Knights? An awesome MC is what happens! A scientist’s goal is to explore the secrets of the universe, and this is exactly what Leylin sets out to do when he is reincarnated. Dark, cold and calculating, he makes use of all his resources as he sets off on his adventures to meet his goal. Face? Who needs that… Hmmm… that guy seems too powerful for me to take on now… I better keep a low profile for now. You want me to help you? Sure… but what benefit can I get out of it? Nothing? Bye. Hmmm… that guy looks like he might cause me problems in the future. Should I let him off for now and let him grow into someone that can threaten me….. Nahhh. *kill*-

Alternative: Leylin is transported from an advanced technological era into a medieval world— except there’s magic. Equipped with “only” his quick wits and an A.I. chip fused to his soul, he sets out to become the most powerful magus the world has ever known. In a land divided into the Light and Dark Magi, the weak can either be cattle or disposable slaves. Only the strong can determine their lives, and only they have the luxury for virtue. Yet strength is only a tool for Leylin, like any other. His goal, in the end, is his own.

This is the story of a modern man who transmigrates to 16th-century India in a parallel world after dying to save his first crush on a date. He regresses as a lowly-ranked soldier in the camp of Hemu, the last northern Hindu king, who is fated to lose and die at the hands of the Mughals.With his modern knowledge and past experiences, the protagonist alters the course of history, forcing the Mughals to surrender and retreat beyond the Ravi River, which is in modern-day Pakistan.As a reward, he is granted trading rights and becomes the emperor’s personal attendant. Using this opportunity, he sets out to reshape the empire. By promoting private enterprise, establishing trading company, and creating opportunities for the lower communities, he begins to shift India’s economy away from the feudal system toward modern capitalism.Despite fierce opposition, these reforms not only unify the majority of Indians but also position the empire as a rising power in global commerce, transforming India into an economic force.His journey is filled with trials, including internal turmoil, political strife, and the looming threat of invasion from the Mughals in the west and the Dutch and Portuguese in the south. As the emperor’s trusted aide, the protagonist not only rescues the crumbling empire but also forges his own path, eventually claiming the title of emperor himself.Join him on this incredible journey of empire's ascension, as he explores how India could have been in the 16th century if history had taken a different course. With just one battle's result, the fate of the entire world is transformed.

Seventeen-year-old Hajime Nagumo is your average, everyday otaku. However, his simple life of pulling all-nighters and sleeping in school is suddenly turned upside down when he, along with the rest of his class, is summoned to a fantasy world!

They’re treated like heroes and tasked with the duty of saving the human race from utter extinction.

But what should have been any otaku’s wet dream quickly turns into Hajime’s nightmare? While the rest of his class are blessed with godlike powers, Hajime’s job, Synergist, only has a single transmutation skill. Ridiculed and bullied by his classmates for being weak, he soon finds himself in despair.

Will he be able to survive in this dangerous world of monsters and demons with only a glorified blacksmith’s level of strength?