Maoyuu Maou Yuusha – Legit

: The shared threat of the demons prevents internal civil wars among human nations.

: The human kingdoms’ economies are sustained by the war effort. Ending it abruptly would cause catastrophic unemployment and starvation. Maoyuu Maou Yuusha

Socioeconomic Foundations and Political Realism in Maoyu Maou Yuusha : The shared threat of the demons prevents

The narrative begins when the confronts the Demon Queen , only to be met with a lecture on macroeconomics instead of a battle. The Demon Queen argues that: Unlike traditional hero-vs-demon tropes

: War has accelerated advancements in medicine and production that otherwise would not have occurred. Maoyuu Maou Yuusha - Википедия

Maoyu Maou Yuusha (Archenemy and Hero) is a seminal work in the "realistic fantasy" subgenre, originally a web novel by Touno Mamare published on the 2channel textboard. Unlike traditional hero-vs-demon tropes, the series examines war as a complex economic and political phenomenon rather than a moral struggle. The Core Premise: War as an Economic Engine