The Regressor and the Blind Saint - Chapter 261: Epilogue

Humanity was on the brink of destruction. Muyoung, an assassin from the Forest of Death, fell to his knees. There were corpses all around him. For years, he had worked for the Forest of Death and had finally been able to eradicate them. Now, he, himself, was about to die. He closed his eyes as he felt his heart stop beating.

In an era when the power of Fire Magic was considered to have reached its limit, one girl began researching nuclear fusion.

The tale of Oliver.
An orphan boy from a Mine, in 19th century Europe, filled with Magic.