This is a world that is a little different from this world we live in.

The human race, the spirit race of the forest owner, the sub-human race with the characteristics of a beast, the fish people who live in lakes and oceans, the bird people who fly in the sky... All the races in this world build villages and form countries in their own realms... All the races in this world are called the same "human".

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The "only" enemy of the humans is the "Evil God," an entity that is made of all the evil in the world that no one knows what it is. The Evil God has awakened from a hundred-year seal and is seeking to destroy the human world in its entirety.

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The only one who can save the humans is the holy hero, who was chosen by the goddess Mercilania, the god who created the world. Armed with a holy sword that can eliminate anything controlled by the Evil God with a single blow, the hero sets out on a journey with a priest dispatched from the Royal Castle Church, with the mission of defeating the Evil God…

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The evil god awakens, and the hero sets out on a journey to defeat the evil god... After passing through countless reincarnations, the new "hero" is now about to set out on his journey... But it seems that this time, the hero is a little different from what people imagined.