MTL - Space Speed Xing Hen - Chapter 43 Air Arena (below)

Business elite Wu Bin suddenly died and reincarnated into a college student in a parallel world.Just as he joined the freshman military training, Wu Bin realized something was off.Why was his body weaker than a woman’s?Wu Bin had thought he could use the system to change his physique and reach the pinnacle of life!But who knew, in the next second, the style shifted dramatically!Ding.【Congratulations, Host, for successfully acquiring Acute Myocardial Infarction】【Beware, when your heart rate exceeds 130, Acute Myocardial Infarction will be triggered 100%】Hiss!Are you serious with this crappy system?【High host dissatisfaction value detected, special gift package for beginners】【Congratulations to the host on your gift— Scorn of Death】【Congratulations to the host on your gift — Rebirth from Cocoon】【Congratulations to the host on your gift — Iron Will】Consequently, the ordinary college student Wu Bin became a regular at the major hospitals in Shanghai.The campus belle was smitten with him, the principal prayed for him, and the instructor treated him as his own biological father!“Why can you fracture a bone just by going to the bathroom!”“How dare you travel all over with only 1 platelet?”“This batch of college students, they're very fragile, hard to kill!”

Just like how everyone adored heroes in their childhood, a certain young man adored those powers hidden in shadows. After hiding his strength and living the mediocre life of a mob character by day while undergoing frenzied training by night, he finally reincarnates into a different world and gains ultimate power. The young man who is only playing at being a power in the shadows, his misunderstanding subordinates, and a giant organization in the shadows that gets trampled…. This is the story of a young boy who had adored powers in shadows possibly eventually reigning over the world of shadows in another world.

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

Ethan Carter never thought much about heroism—until the night he pushed a girl out of the way of a speeding truck and felt cold steel and shattering bones instead of pavement. He expected to die. Instead, he woke up in a hospital, completely healed, with a strange blue screen floating in front of him.[System Activated.][Welcome, User. Your journey begins now.]At first, he thinks he's hallucinating. But when his body starts changing—his strength skyrocketing, his reflexes sharpening—Ethan realizes this is real. The System grants him quests, skills, and rewards, pushing him to break human limits. And yet, there’s more. Locked away in his interface is something called *World Travel*—but it remains inaccessible, its conditions unknown.As he grows stronger, Ethan catches the attention of powerful forces—some eager to recruit him, others determined to stop him. And amidst the chaos, women drawn to his power and charisma begin to enter his life, each with their own mysteries.But one question haunts him: *Why was I chosen?*The answer lies beyond this world. And when the time comes, Ethan won’t just step into new worlds—he’ll conquer them.