God of Adaptation

A boy born in the slums yearned for what the world had in store. Due to the kind heart of a certain person, he could finally grasp the opportunity to do what he had dreamed of dearly. Now on an adventure, everything the world had in store was laid before his sight. The magic spells of regal mages that were as powerful as they were beautiful. The aura arts of valiant warriors, exuding strength and bravery. The holy miracles of kind priests that aimed to cure the world of its darkness. And finally... The evil crafts of sinful demons who wanted to swallow the entire world. Let us accompany the boy in his adventure in pursuing his dream to be just like the hero of the fairy tales he used to read. The series of both fortunate and unfortunate events that he was to experience. Being torn from the one he loved… Finding companions amidst the darkness… Finally reaching for the light he had long yearned for… And so much more. — Description from novelcodex.org