Former Yakuza Boss Lover
|Played by||Ayumi Oka|
Mao is an amoral person, sticking around with a yakuza boss for the benefits before deciding to join another group and get a private detective to help her get her into a higher position in that group.
Mao asked Seiji to help her get a folder that she at first said was for school. Once at the Yakuza office, Mao reveals her ruse and how she plans to join a rival gang. When yakuza members show up from an alarm, Mao pulls a sub-machine gun on them while Seiji runs for it. What happens to her afterwards is unknown.