OST Absolute Duo / アブソリュート・デュオ

This anime revolves around a boy named Tōru Kokonoe decides that after losing someone precious in a terrifying incident, he wants to become stronger and enrolls in a special school where people manifest their souls as weapons called Blaze. Tōru is capable of producing his own Blaze, but for some reason it manifests as a shield instead of a weapon.