As a Prince, I Have No Choice but to Obey This Dragoness

On a peaceful planet, an army of dragons descended from the sky. These uninvited guests of unknown origin instantly destroyed the world's established order. Wherever the dragon army went, humanity was powerless to resist, and people were reduced to slaves of the dragonfolk.

Justia, the second princess of the dragonfolk, is known as "Justia of the Ice." She possesses nearly invincible power. Only by defeating this dragoness can we win back our freedom. Martial arts, magic, or technology: what kind of power can possibly defeat her?