Shin Megami Tensei Codexery

The Great War

A bloody schism that divided humanity from demons, reshaping the world forever.

The Great War refers to a cataclysmic historical conflict within the Shin Megami Tensei universe, most notably detailed in the timeline of Tokyo. It marks the period when humanity and demons, who once coexisted, were forced into violent opposition, leading to the segregation of their worlds. This event serves as a critical backstory element explaining why supernatural entities are hidden from modern society in several game narratives.

Participants
Humans and Demons
Outcome
Separation of Realms
Location
Earth (Primarily Japan/Tokyo)
Era
Pre-Modern Timeline
Status
Historical Event
Significance
Origin of the Great Wall

Lore & Background

In ancient times prior to the modern era, humans and demons shared the same physical space without significant conflict. However, tensions rose over resources, ideology, and power dynamics manipulated by higher divine entities. This culminated in a devastating war where both sides suffered immense losses, threatening total annihilation of civilization.

To prevent further destruction, powerful barriers were erected to seal demons away from human society, forcing them into hidden dimensions or specific restricted zones. This separation created the modern understanding of demons as myths or monsters rather than neighbors. The remnants of this conflict remain visible in ruins and ancient texts that hint at a time when the veil between worlds was thin.

In Their Own Story

Dust choked the air as the last standing wall trembled under siege. A soldier looked at the glowing runes protecting his city, knowing the monsters beyond hungered for flesh. He tightened his grip on the spear, ready to die for the fragile peace that had already fallen. The sky burned orange, reflecting the end of an age where two species once walked side by side.

Reader's Guide

The Great War serves as a foundational mythos element explaining why demons are often hidden from modern society in several timelines. It illustrates the recurring theme of coexistence failing due to mutual distrust and external manipulation by higher powers.

Historians within the lore debate whether this conflict was inevitable or orchestrated by deities seeking to test humanity's resolve. The aftermath established physical barriers, such as the Great Wall, separating species to prevent total annihilation. This event underscores the series' central tension: can Law and Chaos ever truly coexist?

In some narratives, the war is cyclical, returning whenever balance tips too far toward one extreme. Understanding this history helps players grasp why summoning demons requires specific rituals or artifacts to breach these ancient seals. It sets the stage for the protagonist's journey in navigating a world built upon forgotten bloodshed and sealed pacts.

Did You Know?

More in Mythology & Cosmology

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