The nation of the heroes, Sandoria.

A new nation the two heroes established on the land they
liberated from the Demon King who once
ruled the continent with great power.

One of the kings was Sage Roberts.
The hero of intellect who troubled the Demon King's
army with profound wisdom and ingenious strategies.

The other king was Sir Sayles.
The hero of strength who protected his friends
with his body as a shield and defeated the evil Demon King.

The two kings divided Sandoria into two territories,
and while combining their strength, they ruled each country justly.

Approximately 300 years have passed since then—

In the land ruled by the knight king, the young Lord of Sayles, Dean,
takes up his sword to protect his subjects
from the bandits raiding the villages in Sayles territory.
Not knowing this marks the beginning of an endless battle...