Seeking vengeance for his sister's death, Tooru Kokonoe enrolls in the elite Koryo Academy. Here, students master the art of wielding Blaze - weapons that mirror their soul. Despite the fact that a student's future is determined by their weapon's form, Tooru is an anomaly, possessing a defensive Blaze as opposed to a traditional melee weapon. How can he utilize his shield to fight? The answer lies in the Duo system, pairing students together as battle mates, classmates, and roommates. Tooru is matched with Julie Sigtuna, a silver-haired girl from Scandinavia, wielding an unprecedented power and sharing his thirst for revenge.
