Kouno Asami

A radiant figure within the school who serves as Mitoko's homeroom teacher.
Her alluring charm has earned her the affection of both male and female students. Her professional demeanor paints a picture of a confident and competent woman, but away from the public eye, she has a surprising propensity for engaging in petty squabbles.

Despite her apparent successes, Asami leads a challenging personal life, most notably plagued by her unfortunate misadventures in the realm of romance.

Spoiler

Former wife of Osamu. They divorced two years before the beginning of the game.