Written by Yukiya Murasaki

Art and cover by Naoto Fukuda

Diablo, playing the role of the Demon Lord, accepts a mission from the King of Lyferia. However, after developing a friendship with the kobolds he was supposed to exterminate, he finds himself in conflict with the Kingdom of Lyferia. This situation changes overnight due to a shocking declaration of war from the Empire of Gelmed! The enemy destroys a fortified city with extremely powerful Magimatic Sols and conquers it. Meanwhile, Diablo faces an entirely different crisis.

“Umm... Diablo... I saw what... you did last night in the courtyard with Solami…”

This is the twelfth volume of the adventures of an extremely powerful Demon Lord (or at least someone pretending to be one) facing another world! The beginning of a huge twist in the plot!