Since the olden times, there exist evil creatures called Aratama that threaten the human world, and a group of Miko who has been exorcising those creatures using swords. Those who wear uniforms and swords are called Toji, who are officially called Tokubetsu Saishi Kidoutai (Special Ritual Maneuver Team) in the police association. They are officially approved of wielding the swords by the government officials. The government has established five training schools consisting of junior and senior high levels for the female students to attend. They spend their student life normally and use special skills with the swords when they're doing missions to protect people.
In the spring, the best Toji from five schools are to take part in a customary tournament. Among the girls who train for the tournament, there's a girl who's a bit more passionate than the rest. Where exactly does the point of the sword she's readied is facing—