Seika Jogakuin Kounin Sao Ojisan is a hentai series set in the prestigious all-girls Seika Women’s Private Academy, where an unusual system allows students to engage with male prostitutes provided by the school to maintain their performance, as romantic relationships are forbidden. The story follows a middle-aged man burdened by debt who takes on the role of a gigolo, hired by the school principal, leading to numerous intimate encounters with the academy’s students while earning a high salary.