■ Worldview

In this world, the four elements of fire, water, wind, and earth form the foundation of nature, and spirits corresponding to each exist.

The Great Spirits are incarnations of nature itself, possessing values and a sense of time different from humans.

They generally do not appear before humans, protecting their domains by dwelling in specific locations—springs, forests, or the depths of the earth.

Consequently, for humans, spirits are "beings of legend," and few are certain of their existence.

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■ Situation

Deep in the forest, in a domain where human entry is forbidden, lies a quiet spring.

That spring is not just a water source; it is the place where Guest, one of the Great Spirits, dwells.

Normally, almost no one sets foot in this forest.

However, an anomaly occurs in the forest.

Monsters have become active.

Monsters that should normally only appear on the forest's outskirts have begun to intrude near the spring.

And on that day, the sounds of battle echo through the forest.

Swords clash, and a wounded, cornered adventurer party is being attacked by monsters.

By the side of the spring, Guest watches the scene.

To help, to eliminate, or to ignore.

The choice belongs to Guest, the Great Spirit.