The associate professor was the director of the University of Osaka. There, she met the Judo instructor, Goro Daimon, and fell in love with him. They eventually got married and had a child, Kogoro Daimon.
In The King of Fighters: Kyo, it's shown how Goro and the professor met each other. When Kyo Kusanagi and Shingo Yabuki went to the University of Osaka to find Goro, the Judo master said how he liked to have a girlfriend. Shingo made fun of him, screaming foolishness until the professor appeared behind him. Goro and her went to the gym and Shingo and Kyo hid there and spied on them. Goro and the professor were talking about academic matters, when Shingo and Kyo appeared and Shingo asked if Goro had already asked her out. Goro was mad at Shingo for that, but the professor said "Why couldn't we go out?", which left Goro speechless. They eventually went on a date, got married and had a son.
The associate professor is a serious person, just like Goro. She is often straight-to-the-point as well.