Book 17

With the decisive battle on the horizon, Maou and Suzuno journey across Ente Isla on
scooters, Olba forces Emi to become a figurehead for the militia, and Ashiya,
kidnapped by Gabriel, takes the Azure Emperor’s throne as a commander of the
Demon King’s Army. As the various schemes jumble together, Maou encounters
unexpected trouble!?

Book 19

Maou charges through a life-and-death battle to bring Emilia and Alciel back to Japan.
Meanwhile, the objective of Gabriel and the Angels, as well as their hitherto unknown
past forms, is finally revealed!

After the life-or-death battle on Ente Isla, Maou and company return to Japan to resume their daily lives, from the Devil King having his subordinates give him a haircut to the hero blowing off steam at the gym. But as the comfortable peace returns, there are still mysteries left unknown to Chiho. For instance—just how did the powerless demon boy known as Satan rise to become the Devil King in the first place?