Gunslinger: Starting from Being Kidnapped by the Eldest Lady

A firearms genius traveled through a modified earth, but was kidnapped by a young lady just to let him unlock the secret behind a mysterious pistol. In the process, he gradually discovered the tragedy of the student's disappearance three years ago, the reason why the three major forces gathered in Black Rock City, and the mysterious sentence in the gun master's diary, "where stones grow wings, and mountain streams burn with ghosts" all point to the same truth...