Fukiyose Seiri (吹寄 制理 Fukiyose Seiri?) is a character introduced in Toaru Majutsu no Index. She is Kamijou Touma's classmate, Himegami Aisa's best friend, and often takes up the role of the class representative despite Aogami Pierce being the real class representative. A health nut, she is also a temperamental girl, often ends up getting involved in the Delta Force's shenanigans, Seiri serves to represent the mundane world of Touma's school life in contrast to the adventures he gets into.