Reporter Mio Kakei tells Yako that her mother is accused of killing a man who promised to show her pictures of alleged witch Seiren, but did not. Mio and Yako are later kidnapped by an apparent guerrilla and rescued by Neuro and Godai. The guerrilla is opposed to a government project to install gas-lined pipes in the ruins containing Seiren's remains. The chief archaeologist who found her remains tells them that a Shirato village's priest imprisoned Seiren and her child in the ruins, torturing her to death. The possible father of her child is a Japanese architect, who Yako thinks may be her father.