Dungeon of Knowledge - Chapter 211: Slime Lord (Part 1)

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

Cha Myung-jun, a sergeant who neared the end of his military service, found himself confined in the Ministry of National Defense’s bas**ent for over three decades due to his newly awakened abilities, just before the outbreak of war. Spending thirty years as the world’s most formidable blacksmith, wielding nothing but hammers, he skillfully outwits the watchful eyes of the Ministry of Defense to serve the war effort and reset the course of time. Now given a second chance at life, can he lead a successful campaign to avert humanity’s downfall and secure its salvation?

It’s been 10 years since I found myself in the game “War of Gods: Infinite Defense.”From being the illegitimate son of the Red Dragon family, I rose to become a prominent figure, but under my half-brother’s schemes, I eventually met my demise.[Game over] [Hidden Ending: The Secret of Ray Hatzfeld]However, I was given another chance.[Discovery of the hidden ending has unlocked a new story.] [Additional content is being downloaded.] [The story of Kane Rehinar, the Grand Duke of the Water Tiger family, begins.]Not as the illegitimate son of the Red Dragon family, but as the Grand Duke of an enemy nation!“Hatzfeld, this time I will make sure you die in the most painful way possible.”