Unaired episode included in the fourth Blu-ray volume. The episode will take place during the same time in episode 16 (episode 5 in second cour) and depict what Eris and Ruijerd were up to outside the main story, as teased by the comment "Goblin Extermination."

The mass-teleportation in Fittoa places Princess Ariel Anemoi Asura in mortal peril—then drops a powerful new bodyguard into her lap! While Rudeus and Eris journeyed home, a deadly drama was playing out in the halls of power.

Rudeus receives a letter from Paul. The letter explains that Norn and Aisha, Rudeus's younger sisters, have been sent to join Rudeus. Meanwhile Nanahoshi continues her research into summoning magic for a way to return to her original world.

Rudeus's sisters arrive with an unexpected chaperone. After catching up with an old friend, Rudeus decides it's time to send the girls to school. But convincing Norn and Aisha turns out to be more trouble than he bargained for.

Norn shuts herself in her dorm room and refuses to attend classes. Haunted by the specter of his past life, Rudeus sets out to solve his sister's problems, only to discover that he is the cause.

No tenemos una sinopsis en español. Ayúdamos a ampliar nuestra base de datos añadiendo una.