Suspicions Deepening Within Mysteries.
During the sports festival, Kurumi sends out wind spirits to investigate the grounds for any suspicious activity. A manipulated upperclassman summons twisters in the sports grounds and Basara springs into action to quell the situation. Seeing Basara's true nature, Tachibana reveals himself to be a vampire and duels with Basara. After subduing Tachibana, Basara encounters Chisato and suspects her to be the culprit. Sakasaki guides Basara into safety and reveals that he is an old acquaintance of his father and Chisato's plot of controlling the entire school populace. Basara, however, sees through Sakasaki's lies and the latter is actually Ornis a demon planning vengeance on the gods that had banished him. As Basara submits after seeing the demon holding Kurumi hostage, the demon cuts off Basara's arm, disarming him.