Introduction: Rizki Evan, a chemical engineering student, suddenly wakes up in the body of a slave—in another world.This world resembles medieval Europe. Unlike the modern Earth he knew, life here is harsh and brutal. In fact, it’s even crueler than Earth’s own Middle Ages.Perhaps it’s because of the existence of real supernatural powers…In this world, all beings use mana as their source of strength. There are classes or jobs like swordsman, magician, tank, alchemist, and more.As the saying goes, “Hard times create strong men, and easy times create weak men.”But humans are incredibly adaptable creatures.“Alright… First, I need to survive and grow stronger. After that, I’ll uncover the secrets of this damned world. I… miss my comfortable Earth.“...