The episode looks back as Ayano and her family takes in Tsubomi (Kido), Kosuke (Seto), and Shuya (Kano), helping them to control their powers. Ayano acted like a big sister to her companions, staying strong even after her mother was lost in a landslide. One day, Ayano discovered some notes written by mother, researching an old folk tale that appears to hold the origin of the children's powers. Later on, following the school festival, Ayano realised from reading her mother's notes that Kenjiro also possessed powers of his own, an alleged 'snake' that had its own will, asking Shuya to help her investigate. Back in the present, Kano, who had been explaining the story to Ene, explains that the king 'snake' is trying to bring together all the other 'snakes' in this world, before leading her to a secret laboratory inside a school where Ene's real body, Takane, is being kept.