Once the finest instructor in the Blood Cult, Suryong Baek is killed, only to to wake up in the body of someone who teaches martial arts at a small rural academy. His new body may be weak, but he knows how...

Welcome to Nanba, the world's largest, most impenetrable prison. Locked away in cell block 13 are four inmates - Juugo, Uno, Rock, and Nico - who provide more than enough trouble for prison guard Sugoroku Ha...