Reizoku Choukyou The Motion Anime

In City X, there are only two educational academies - a female academy with incredibly strict discipline and moral education, and a male academy where anarchy and impunity reign. Every day, boys attack the female academy and harass girls by grabbing their private places. The student council of the female academy decides to send three girls to the male academy to put an end to the offenses once and for all. However, for the girls, this becomes a one-way road, as the enemy has chosen a rather sophisticated strategy...