Chihiro Ayasato

Mia Fey is the head of her own criminal defense law firm and serves as Phoenix's boss and mentor. Always cool under pressure, Mia Fey is smart, tenacious, a strict teacher, and sometimes even coy. She has a great affection for her sister but is also very independent, and strives to uncover truth at all costs. Misc Facts: She seems to have a problem with names, calling "Naruhodou" "Naruhodo" (there is a difference!) in the Japanese game, and Larry "Harry" (in the Japanese, Yahari becomes Yappari).

In the original script Turnabout Sisters was going to be the first case, but the writers changed their mind, so that Mia would be able to interact with Phoenix more as his mentor before her death.

Mia has a younger sister, Maya, who she's very close to despite their age difference. Her mother Misty has been missing for 15 years, but she has an aunt Morgan, and a cousin, Pearl.
She also is Diego Armando's Girlfriend. He was her mentor in law and a few weeks after the Terry Fawles case that traumatised her so badly, the two started dating. It is unknown how far they were in their relationship, but their love for each other is more than obvious.