Bust Through the Heavens with Your Drill!!

시즌 1, 에피소드 1: In an attempt to escape their mundane lives, Kamina and Simon bear witness to a monstrous Gunman, as it crashes into the middle of their subterranean home. Together with the Gunman's pursuer, the female stranger, Yoko, the two young men find the key to both defeating the massive intruder and leaving Giha Village.