俺が校則！中出し以外は校則違反！！！ ～女子校生全員中出し完全制圧計画～

Hiriya Seita attends a high school that has two departments: Department of Athletics and Department of Cultural Studies. He was in the Athletics department at the beginning but due to an unfortunate accident, he was forced to transfer into the Cultural Studies department. However, the fact that he always had trouble with women did not help since the entire department consisted of only females!

One day, when everyone is preparing for the school festival, he discovers another student breaking school rules in his online network. Vehemently confronted by the student, Hiriya uses her school rule violation as blackmail and forces her to do what he wants.