Kawakami Sadayo wanted to play a joke, giving a special class, the title of which she chose, fetish, thinking that no one would come, but to her surprise many students both male and female came to her classroom, even though she said it was a joke, she never expected the council to approve her class, so now she has no choice but to agree to the routine activities of her class, namely tying up, gagging the teacher and leaving her barefoot so that the students can have fun with those smelly and soft bare feet.