Armed Girl's Machiavellism

Originally, the Private Aichi Symbiosis Academy was a posh girls' high school. Out of fear, the girls requested permission to bring firearms to school when it became co-ed.  When that was put into effect, an organization resembling a vigilante corps with five members named the "Supreme Five Swords" was also established. The academy began deliberately enrolling such candidates after several generations, and the five swords eventually developed into a group that rectified troubled students. Nomura Fudou was assigned to this institution after taking part in a significant conflict. What will he do when his only choices after joining are being banned from that school or being corrected the same way the other male students there were by being made to look and act like a girl?