An Orphan is attacking city buses, but Mai has her own problems. The stress of taking care of her ailing brother gets to her, and Yuuichi Tate comforts her in the rain. They later go back to teasing one another.

Mai's relationships with Reito Kanzaki and Tate continue to develop. Natsuki takes Mai and Mikoto on an information gathering mission at an abandoned First District building. Natsuki eplains she's trying to destroy the First District.