9 : Studying In The Netherworld -

This arc leads into the introduction of Balam Shichiro , a teacher specializing in imaginary beasts who eventually helps Iruma due to their shared "differences" from typical demons.

Iruma's ring incarnation, Ali, expresses justified worry about Iruma’s academic standing, noting that failing could lead to him dropping a rank. 9 : Studying in the Netherworld

Professor Kalego announces that any student who fails even a single subject must attend remedial classes during their entire break. This arc leads into the introduction of Balam