Raiga and Crow encounter the Horror Idora, whom Mayuri reveals to possess Eyrith's seed. But after Garo slays Idora, the sprout that is Eyrith vanishes and Mayuri suddenly falls ill after absorbing Idora's essence. Raiga and Crow later learn that Eyrith transfered herself into another of the slab Horrors and that they must find the remaining four, and learn that the Makai Priest Shido will be visiting them to check on Mayuri's condition. When they return to the mansion, they find Gonza drunk, until they are formally introduced to Shido. Shido, upon examination of Mayuri, discovers that she has consciously activated her inherent powers. After she is sent to bed, Shido tells Raiga and Crow that Mayuri is actually a human, rather than simply a tool, who possesses the powers she does now because her mother was possessed by a Horror when pregnant with her. However, as her ability to seal Horrors made her useful, Shido explains that he treated her like an object to keep her from falling victim to human emotions. Zaruba and Orva reveal that they sense the faint presence of a Horror, and Shido explains that the Horror essence within Mayuri is slowly consuming her, as she wanders around town on her own. Raiga and Crow find her, having been manipulated by Idora to fall into temptation, and she has fallen into an even deeper sleep. Shido believes that they are too late to save her, but Raiga decides to enter her subconscious to destroy Idora's presence within her mind, freeing Mayuri from the mental cage at the cost of his own lifespan. The next day, Shido deems that Mayuri's condition has stabilized and suggests that Raiga get some rest. He realizes he was wrong in treating Mayuri as an object, and admits how proud he is of the strong woman she has become.
