Fumie is the 7th member of the Coil Dennou Investigation Agency. She is Yasako's best friend. She is an experienced hacker and an adept user of metatags; Oyaji is her servant helping in the investigations. She is Daichi's rival and their loud personalities cause them to often clash and fight—despite this he has feelings for her that she hasn't noticed. Additionally, she has a younger brother by two years named Akira, who perceives her as too much of a bully (to him) and tries to document these moments behind her back to use against her in the future.