Alex bid his goodbye to Elaine, Ramza, and Roselia, then followed his master to a remote location.
The Catkin had asked to talk with him in private, and the latter merely assumed that his Master was just shy to bid him goodbye in public.
"Alex, we won't be seeing each other until your school break," Cairo said. "But before I leave, I plan to teach you two Demon Slaying skills."
As Alex's master, Cairo could directly impart a skill to his disciple even if they had different professions.
Learning skills supposedly exclusive to another profession was one of the many advantages of having a powerful master in Arcana.
Cairo was a Demon Slayer, so that meant Alex could learn Demon Slaying skills from his master, despite being an Oathkeeper.
