Tor Kokonoe has entered the prestigious Koryo Academy, a high school dedicated to training its students to wield Blaze individualized weapons that a student manifests. The future of a student is often shaped by the form their weapon takes, and when Tor s appears as a shield, suddenly he s the odd man out. But that s when the Duo system comes in, a program where students are paired up. Teamed up with a silver-haired girl named Julie Sigtuna, Tor s adventures at Koryo Academy are just beginning!