A story about two best friends, JK (high school girl) Miina and Kyouka, who are also classmates of a perverted teacher named Takemoto. Takemoto's daily routine was mostly focused on voyeurism until he discovered that his students were aware of his actions and used it against him. They started blackmailing him during afterschool hours, indulging their desires by taking advantage of his large penis. This led to frequent anal intercourse involving multiple partners, including threesomes and foursomes. The distribution method may vary depending on the recording conditions.