RESONANCE: Life in a Dystopian World

Ethan is a college student and hacker by the day and an underground fighter by night. He slept in his room with a swollen ankle after an underground fight. But when he regained consciousness, he found himself stuck in a body of a tyrant leader in a dystopian nuclear-ravaged world.
Ethan must hide his identity and survive among those war-ridden people while maintaining the fortress as a fortress master. He plans to find a way back to his world before this new war-ridden world devours him.
"If someone brought me into this world, then there must be a way to go back to my real world. Until then, I must survive at all costs..."
Things don't always go as planned. Ethan soon found himself entangled in the never-ending war over resources and power. He discovered that he isn't the only one from earth who got reborn in that nuclear-ravaged world. So he tried to find out more about the power that brought people from earth into that destroyed world.
"What is that red button? I always wanted to press a red button that no one is supposed to press. What the heck? What could go wrong in this already destroyed world?" Ethan pressed the glowing red button of an underground blast shelter while searching for resources.
Ethan's one mistake has awakened something ancient... Something evil that doesn't belong to the mortal world.
***********
I am also posting this book on Royal Road.