An assassin is sent by the Sablum to kill Priecia. Everyone mistakes her as the princess instead.

Hyaweh makes fun of Priecia and angers her. Her admirers search for different ways to get rid of him.

A new student named Kagura follows Priecia claiming to be her new bodyguard. Priecia challenges Kagura to a duel and decides to accept Kagura's protection.

The Prism Exam, dubbed Puriken by the headmaster, is about to begin. Priecia is having difficulties of indecision about being a knight, but was later enlightened and encouraged by Hyaweh's words.

Hyaweh, Priecia and the rest go into town for the day. After an embarrassing situation Hyaweh and Priecia run away and end up spending the day alone together, but they soon get attacked by enemies and Priecia gets kidnapped, but Hyaweh is ready to save her.

Hyaweh, Priecia and the others are assigned to protect a frontier fort. Arriving at the fort, the students are ambushed by an angel. When Priecia is injured, Hyaweh unleashes the power of his sword and destroys the angel.

Upset that Hyaweh got injured protecting her, Priecia runs away from school and meets a nun named Teresa. Teresa questions Priecia's beliefs and makes her ponder why she wants to be a knight.

When Hyaweh finds Priecia, Karin is close behind and discovers Teresa. The two face off with Karin in rage about Teresa's past deeds. Priecia saves Karin and masters the Mirage Lance technique when defeating Teresa. The dark knight interferes and remembered something after seeing the pendant, and it's Hyaweh's chance to stab his forehead.

The annual school festival is coming up, and everyone is looking forward to the PNP (Prism Night Party) where an event called the PPP (Prism Prince & Princess) is the main highlight. Priecia, who has challenged Hyaweh to a duel, is convinced to participate in an acting competition, thanks to Fel and the Headmaster.

The school festival has now commenced. Everyone, including the teachers, competed intensely to obtain the Breast Armor, to the point where they even used their special techniques (those who possess the armor pair is crowned the pair for the PPP, and will be the main characters in the play). With the pair having to kiss in the final scene of the play, will Priecia succeed in being paired with Hyaweh?

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.