Yoko Misono (御苑 洋子) is one of the protagonists of the Detective Saburo Jinguji series.
Story[]
After graduating from high school in Yokohama, Yoko entered an American university and majored in foreign languages. She got acquainted with Saburo in an incident that happened while she was in America, and after returning to Japan, she reunited with Saburo in Shinjuku, and has since worked as his assistant.
Yoko is very intelligent and has very good intuition, helping Saburo several times with her observations during their investigations. Despite not being much for action she's also been shown to be capable of investigating on her own.