Busou Shoujo Machiavellianism

The "battle action" story follows Fudou Nomura, who transfers to a school where girls carry weapons to rule mercilessly over the boys. Shortly after transferring he becomes a target of Rin Onigawara, a member of the the Five Ruling Swords that commands the school. In order to break free he must defeat the Five Ruling Swords.

(Source: Anime News Network)