Fate understands that timid souls won't entertain her, so she grants them a simple death as their end. But for the brave-hearted, like sixteen-year-old Kanito Aramishi, she often reserves her admiration.
One night, returning home from his high school farewell party, Kanito becomes entangled in a series of supernatural events. A mysterious man stabs him in the chest, and a red magical circle on the ground, now fed by his blood, activates, serving as a gateway for demons to enter Earth. He witnesses a blue portal in the sky, from which a man descends to save him. In a desperate move, this man transports Kanito to an entirely different world.
Kanito never imagined that the night he bid farewell to his school would also be the night he said goodbye to his own world. The harshness of this new world begins to reveal itself in various devastating forms.
Caught amidst this chaos, Kanito finds his morals wavering. Will he uphold his principles or succumb to fate? Time will unfold the answers, revealing Kanito's true purpose and, eventually, the world's.
