Fukiyose Seiri

Fukiyose Seiri (吹寄 制理) is Touma's classmate, Aisa's best friend, and often takes up roles of the class representative even though Aogami is the class representative. She dislikes people (namely Touma) who give up on their life and blame it on bad luck. It is debatable if she is tsundere towards Touma or only dislikes him because of his attitude towards life and school in general, but she does have a sort of friendly relationship with him, even sometimes playing a role of tsukkomi for Touma who acts as the boke. She is mentioned as the girl who is "pretty but lacks sex appeal." Her nickname is "The iron wall girl", She is a health-product freak and is frequently ordering different health products from television shopping channels. Her abilities have yet to be revealed.

During the events of the Daihaseisai, she was a member of the committee of coordination for the schools and did her best to make sure the students enjoyed the games, but later during one of those games, she was almost accidentally killed by one of Oriana Thomson's flashcards which dried off her life energy. She was saved by Touma who dispelled its effects. Thinking that the cause of her collapse was a sunstroke, she is later seen recovering with help of Heaven Canceler, in the hospital where Touma usually ends up after getting hurt.