Welcome to Mother, Dearest
That's right. A shrine to a character that spends about a minute and a half on screen. In a show like Shoujo Kakumei Utena, it's hard to write off even the minor characters as insignificant, and you certainly can't do so with Mrs.Ohtori.
In her one brief scene, Mrs.Ohtori gives us a glimpse of the ugly adult world that surrounds Ohtori Academy; something we tend to forget exists in a series that centers around the teenagers in the school. Her character exemplifies sex at its absolute worst, turning her back on a sick husband and an unhappy daughter to seek out her adulterous affair with a younger man engaged to her own child. What you'll find here is my little site for a character with very little screen time and very little moral restraint. Continue on, and thank the heavens this isn't your mother, and that you aren't engaged to the man she pursues.