One day after school, teacher Nozomi Hazuki is raped by her student, who also toys with her anus. Using photos from the incident as blackmail, he forces her to obey his every command. She is made to teach class wearing only a miniskirt, with no panties or bra, while her anus is tormented in secret behind the classroom. Amid overwhelming shame and humiliation, Nozomi finds herself succumbing to the pleasure of anal stimulation, continuing to submit to the student's cruel demands.