Emerging from a nice hot shower, Ryo Kaizen an ordinary high school student steps into a swirling dimensional portal, only to find himself in a realm where every breath pulses with martial energy. Empowered by a mysterious system, he battles monstrous creatures and ruthless bloodthirsty martial artists . But as he confronts inner demons and ruthless adversaries, he uncovers a sinister conspiracy threatening the world. Will Ryo tame the chaos, or be consumed by it?