Fudou Nomura transfers to Private Aichi Symbiosis Academy after being expelled for fighting. At his new school the male students live under the iron rule of the Supreme Five Swords, five weapon-wielding girls who force every boy to cross-dress or face expulsion. Nomura refuses to comply and challenges the Swords head-on, starting with their leader Rin Onigawara, and sets his bare-handed martial arts against her blade.