Sam was surfing with his cat when the world ended. Suddenly enlisted into a battle to fend off annihilation, Sam seizes the strength of the void to survive. In the aftermath, Sam is thrown into a new world shattered into floating islands with survivors from Earth. Training and fighting with his giant sword and apocalyptic mana alongside his magical healer cat, Sam's unusually quick to adapt to this deadly realm of monsters and magic. With endless threats to face and countless powers to attain, Sam's journey of ascension climbing has only just begun.

Arden was left in the village by a dying mage, who never returned. With no way out of the village on his own, he had always held onto the hope that one day his magic would awaken and give him access to his spheres. But he’s about to turn eighteen and it’s never come. Instead, he’s settled into his lot as a sarcastic and quick-witted innkeeper. That all changes one night when his old flame, who escaped the village to become a mage’s anchor, returns. Ard’s life is about to go through some dramatic changes, and he’s not ready for them.

Humanity stands at the brink of extinction. Earth has been bombarded by forces beyond our understanding. In the aftermath, monsters roam the Earth while humanity is forced into a few small safe zones, but not all is lost. When the shadows fell, so too did hope. Progentitor rays birthed a new breed of humans, known as supers. Now those few are all that stands between mankind and death upon the claws and fangs of monsters.

Have you ever felt like there was something inside of you pushing your actions? A dormant beast, so to speak. I know it sounds crazy. But, that’s the best way I could describe how I’ve felt for a long time. I thought it was normal, some animal part of the human brain that lingered from evolution. But, this is the story of how I learned I wasn’t exactly human, and there was a world underneath our own where all the things that go bump in the night live. And, that my beast was very real indeed.

In a world where mages and monster grow from cultivating mana, Isaac joins the class of humans known as mages who absorb mana to grow more powerful. To become a mage, he must bind a mana beast to himself to access and control mana. But when his mana beast is far more human than he expected, Isaac struggles with the budding relationship between the two of them as he prepares to enter his first dungeon.