A Record of Ash & Ruin: The Grieving Lands - Chapter 4Book 3: : Symbiosis

In a land ruled by vile monsters, where death is common and life is cruel, one outcast endeavors to have it all. When misfortune drags the odd goblin Stryg from his forest home and into the ruthless city of Hollow Shade, he must try and adapt to a world that only sees him as a dimwit savage.Stryg finds himself embroiled in a school of magic, where an aristocrat's smile is filled with deceit and the simplest of remarks may lead to death threats. Yet nothing will stop him from aspiring to his beliefs of glory: power, honor, and food with salt.But as Stryg navigates through the muddled grey waters of the Ebon Realm, he will learn that some monsters lurk everywhere.

An orphaned boy with dreams of making it big through being a blacksmith is given a once in a lifetime chance to succeed when he's taken in by an odd pair - Eggor and Ella. While former teaches him the arts of craft, the latter teaches him the mysticism of cultivation, granting him two paths to tread in this life.

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

“Why don’t they think about training to grow stronger during a time when just breathing makes you stronger?”After possessing someone, he decided to silently train to become a great mage.“Did it appear?”[You have acquired the All-Attribute Body (Fire, Water, Wind, Earth, Wood, Electricity, Light, Darkness).][You have acquired the highest-grade elixir, Dragon’s Essence (SSS).]……Let’s take a slightly different path to growth from others.