The end of terminus enters its final days. Iruma safely finishes his homework and is invited by Sullivan to go to Magical Street along with Opera. They browse around picking up things Iruma will need for his new school term. Iruma happens to overhear some demons talking and then asks Sullivan about the Demon King, since he is one of the most qualified individuals to become Demon King. What exactly does it mean to be the Demon King, the most powerful being in the netherworld?
He is a human, but he goes to the 
demon school Babyls in the netherworld.
.إنّه إنسان، لكنّه يرتاد مدرسة الشّياطين بابيليس في الجحيم
Er ist zwar ein Mensch, geht aber
auf die Dämonenschule Babyls.
Es humano, pero va a Babyls,
una escuela para demonios.
Es humano, pero va a Babyls,
una escuela para demonios.
Bien qu’étant un humain,
il fréquente Babyls, l’école des démons.
È un umano, ma frequenta
 la scuola per demoni di Babyls nell'Altro Mondo.
Ele é humano, mas está frequentando a
escola de demônios no mundo inferior.
Он человек, но учится
 в школе демонов «Бэбилс» в Преисподней.