Please help

I need help finding a story from the erotic couplings section, about a teacher who saw a pic of a student's ass and from there went down a spiral of fucking different girls from the school, eventually he fucks one in the ass I believe, can someone help?

Hmm. Sort of a Cinderella story.

Sounds like a rabbit hole storyKant

Oh that one.

It’s In the Ass of Madness, by HP Hovercraft.