Fuuki Benikomichi

Benikomichi Fuuki is the president of student council at Kyousuke's school. She is revealed to be Hayato's Yorishiro. She once belongs to the summoner's group called "Murder Intent of Antenna", which has one goal: to make this world better for all. Their operation method is usually: "Go out and killed some bighead criminal who have the potential to become a threat to the world."

(Source: AnimeSuki)