The sole daughter of Italy's Germi family of zillionaires.
The Germi family has a long lineage of soldiers, and Fio's father hoped his first born would be a tough little boy. But the child who emerged at the end of a difficult pregnancy proved to be a dainty little girl. And Fio's mother was no longer able to bear children.
Having a girl successor was a first for the Germi clan's long history. Because the Germi family's tradition required its new head to be a soldier, Fio's father made it clear that she would enlist in the government army and but him no buts!

In the best of all possible worlds, Fio would have no business being assigned to crucial missions. But through the machinations of Fio's father, hoping to maintain the glory of Germi, Fio found herself in Sparrows. Unable to grasp what exactly had gotten her here, she participated in the suppression of Morden's second coup attempt.

Miraculously, she quickly earned the rank of sergeant. And subsequently, rose to the Master Sergeant. But what justified this? Certainly, she thought, not her service.
Raised in a virtual parallel universe to Eri and showered with parental love, Fio possesses a mild-mannered disposition. In college she studied chiropractic, acupuncture, and moxibustion, and aspires to one day become a sports doctor.