Hiroko and her friends begin to translate the Franco-Latin-Hebraic text of the Bible Black, and plan to get revenge on Nami for forbidding them to start a Witchcraft club. As a test run, they cast a simple spell on Nami's lover, Junko, which is said to make a young woman "dance naked". Their spell proves successful when the next day Junko becomes aroused while giving a speech for an assembly, causing her to strip down and masturbate in front of the whole school. Nami is horrified by the incident, and becomes suspicious of the group when Saki later threatens that she might "be the next to dance naked".