She is a serious female teacher who is popular with the students. She is beautiful and has a nice figure, so she is the perfect masturbation material for the male students. One day during class, someone takes a picture of her skirt, which is a little short, and in exchange for not spreading the image, she is humiliated by having her pants taken off and her embarrassing asshole spread. Even the image of her bare anus ends up in the hands of a naughty student, and the blackmail against the female teacher escalates! She walks around the school at night naked with her anus illuminated, and has her asshole spread and gang-raped... but the embarrassing experience gradually turns into excitement...