Hyaweh and Priecia face off in the graduation duel to determine the student representative. Priecia wins and decides to confess everything to Hyaweh during the graduation ball. Priecia reveals that she is the container for the true princess, and Hyaweh decides to become her knight. When angels attack the castle, Hyaweh and Priecia unleash the true power of the Ala-Gladius and become a giant glowing angel that defeats the army.
血のように紅い夕日に照らされてプリーシアの周囲を取り囲む観客席から騎士学校の生徒らが歓声をあげている。ビュ！とレイピアを構えるプリーシアと、アーラグラディウスを青眼に構えるハヤウェイ「決着をつける時が来た」。果たして決着の行方は・・・そして、真の陰謀が明らかに・・・
