This story is from a very long time ago, so distant that even an old man like myself cannot recall the name of that era. If a timeframe must be established for this story, then according to the Scholars' deductions, this period should fall under the reign of Kayne's third-generation monarch.
During that period, the Kayne Empire—although strictly speaking, it could not yet be called an Empire at that time—had, after a long period of forbearance, gradually established the name Kayne as a firm foothold on the continent.
Whether it was the Mantai People from the west or the Vero People from the southeast, they all considered Kayne a naive child ripe for bullying. In the histories of these two empires, the Kayne People were the eliminated weaklings; weaklings who had no right to speak.
Every so often, these two empires would come to the Kayne Realm to plunder. The forbearing Kayne People, with their tenacious spirit, endured year after year.