That Time I Got Reincarnated as a Slime Codexery

Demon Lord War

A new Demon Lord rises to reshape the world through conflict and diplomacy.

The term often refers to the period of intense geopolitical and magical conflict surrounding Rimuru Tempest's ascension to Demon Lord status. This era marked a shift in the balance of power on the continent, as the new generation of powerful entities clashed with established nations like Falmuth and the Holy Kingdom. Rather than a single battle, it encompasses the series of confrontations where Rimuru solidified his authority among other Demon Lords while defending the Jura Tempest Federation. These events redefined the relationship between humans, monsters, and supernatural beings.

Quick Facts

Key figure
Rimuru Tempest
Affiliation
Jura Tempest Federation
Status
Demon Lord (True Dragon later)
Primary opponents
Falmuth Empire, Holy Kingdom of Salgen
Outcome
Establishment of New World Order

Lore & Background

Following Rimuru's transformation into a Demon Lord, the existing power structures faced an unprecedented challenge. Traditional human kingdoms viewed this ascension as a threat, fearing domination by magical entities. The conflicts that followed were not merely territorial but ideological, testing whether humans and monsters could coexist under new leadership. Other established Demon Lords, such as Milim Nava, observed these tensions closely. While some remained neutral or allied with Rimuru, the pressure from external forces created a volatile environment. The outcome of these struggles determined the future stability of the continent, moving away from ancient prejudices toward a more integrated society.

Reader's Guide

This historical concept describes the turbulent era following Rimuru Tempest's ascension to Demon Lordhood. It is characterized by military engagements against human empires and political maneuvering among supernatural entities. The conflict forced a reevaluation of global alliances, pushing the Jura Tempest Federation into the spotlight as a major power broker. Myths suggest that this period tested the limits of Rimuru's unique abilities to unite disparate races. Legends within the world speak of how these wars ended not with total destruction, but with treaties that reshaped borders and laws. The legacy continues today through the diplomatic networks established during this time.

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