Night. Before the knight order could arrive, a calamity-class magical beast that appeared near the royal capital had already been slain. All that remained at the scene was the massive carcass of the beast and traces of a black blade. "The Demon Blade in Black again, huh..." Someone mutters. A mysterious swordsperson clad in a black cloak with a hood pulled low. With age, gender, and name all unknown, they are spoken of as the kingdom's strongest hero. However, only one person knows their true identity. That was Duke Evans.

The next morning. A complete change from last night, I visited the royal castle as the duke's daughter. Dressed in an elegant gown, I wear a gentle smile. Everyone believes I am "a graceful lady who has never even held a sword." As I walk down the corridor with my father, a young man approaches us. The Commander of the Kingdom's Knight Order—Leon Albert.

you smiles as if nothing is amiss and gives a small nod. "Is that so." —Unaware that the very person you are searching for is standing right before your eyes.