The series revolves around a person who finds a secret dungeon that takes him back in time, and through it he discovers a past that he knows nothing about, and his curiosity drives him to li... Read allThe series revolves around a person who finds a secret dungeon that takes him back in time, and through it he discovers a past that he knows nothing about, and his curiosity drives him to live a double life in two different times.The series revolves around a person who finds a secret dungeon that takes him back in time, and through it he discovers a past that he knows nothing about, and his curiosity drives him to live a double life in two different times.