The Nerv Kingdom, where I live, is one of the largest countries on the continent.
The beginning of the country is said to have started with the "Great Saint," and it is believed that her descendants founded the royal family.
It is said that the Great Saint sealed away the demon king who had once plunged the world into terror, married the hero who helped defeat him, and their child went on to rule the country generation after generation.
...But that's a complete lie.
The power of the Saint is the power of healing.
It is said to instantly heal all wounds, restore lost parts, and even cure diseases.
However, over the course of 100 years, and then 200 years, the power of the Saint gradually weakened.
Originally, there were many Saints throughout the continent.
Therefore, the royal family maintained the power of the Saint by repeatedly marrying women who strongly possessed it. The same was true for the nobility, as it was known that the power of the Saint could be passed down to the next generation more reliably than magic.
The power of the Saint, which guided the beginning of the country and maintained peace, was considered precious and was highly valued, with its continuation to the next generation being the top priority.
There are also practical issues.
During battles with monsters or enemy countries, the presence of a healer can significantly change the course of the battle.
The valuable healing magic can only be used by the Saint.
Despite this, the number of Saints has steadily decreased.
While children capable of using attack magic are born in a certain number, those who can use healing magic and become Saints have almost stopped being born.
As a result, Saints began to be protected by the state. They were gathered in churches, taught about the power of the Saint, and practiced using it.
Proposals from nobles poured in, and engagements were made even from a young age. Regardless of their commoner origins, those with the power of the Saint could become part of the nobility.
Due to their small numbers, Saints no longer worked as adventurers and all became affiliated with the kingdom. During peacetime, they spent their days making healing potions and accompanied the knight orders when they went to war, protected and revered by the knights.
Wherever they went, they were called "Saint-sama, Saint-sama" and treated with the utmost respect.
Because of this, the Saints came to believe they were chosen ones, became conceited, and grew arrogant.