Welcome to the prestigious Koryo Academy! A special school where students train to fight with weapons that are manifestations of their souls. On the outside, Tor Kokonoe seems like a regular academy student. But while his classmates carry swords, kunai, and axes into battle, his soul becomes a shield.

As the students pair up in order to reach their full potential, Tor is partnered with the mysterious and exotic Julie. What he doesn’t realize is that their partnership means they’ll have to do everything together—fight, attend class, and even sleep in the same room! As the strangely affectionate girl begins pushing his boundaries to the limit, the other girls in his class start taking notice. While he’s fighting to make the grade, he’ll have to fend off the advances and attention from the tomboyish Tomoe, the meek Miyabi, and the exceptionally talented Lilith—a shield might be just what he needs after all!