Introduction: Jeong Yoo-shin, 23 years old, was suddenly transported to another world.  In this world, not only was it impossible to return home, but even survival was uncertain.  Black-haired humans were called Barbarian and treated as northern savages.  There was only one place where he could gain the strength to survive and find a way to return home: the Great Labyrinth.  “I must become stronger to survive. And I will definitely go back.”  This is the story of a black-haired human’s fierce struggle for survival in the labyrinth....