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?
The Missing Demon King
 Derkila
ملك الشّياطين المفقود
ديركيلا
Delkiller













Der verschwundene Dämonenkönig

Rey Demonio
de la desaparición
Rey Demonio
de la desaparición
LE ROI-DÉMON DE LA DISPARITION, DELKILA
Il Re dei Demoni scomparso
Derkila
O Demônio Rei Desaparecido
Derkila
Деркила, Пропавший Князь Тьмы