 Meanwhile, Nobuo becomes deranged, paints his body as if he was a primitive savage, and mutilates the corpse of a teacher thinking he's still alive.He kidnaps Ako and almost rapes her, but she manages to escape.In the ventilation shafts, Teru is suddenly hit by a powerful stream of contaminated water, which saves him from a previous cave-in that almost buries him alive, and the shaft collapses while the tunnel is rocked by more powerful tremors.