A fake Jigoku Tsūshin is created and circulated among students who were just scolded by Baba. Tracing was carried out and they concluded that a student named Ikami Waka created and circulated the fake Jigoku Tsūshin. However, Ikami claims that she did not do it. On the same night, another teacher named Kuriyama Mami calls Ikami and tells her that it was Baba who made the fake Jigoku Tsūshin and blamed her for it, and that Ikami should come to the school to plot revenge. Mami meets Ikami in the computer lab and tries to convince her to access the real Jigoku Tsūshin to send Baba to Hell. To Mami's surprise Ai arrives instead. Mami and Ai already knew each other from their pasts. Mami created the fake Jigoku Tsūshin and blamed the students for it.