In this world, nobles generally maintained a veneer of civility. Even with minor grudges, they kept up appearances unless the enmity ran too deep or they were backed into a corner.
This was especially true when dealing with nobles of unequal status.
But there were no absolutes. The way nobles interacted wasn't just influenced by their rank; it also depended on their individual personalities and upbringing.
Some people were simply arrogant and haughty. It was difficult for them to suddenly start acting deferential toward someone.
Moreover, this was an Extraordinary World where aptitude and strength also influenced many things.
A Silver Moon Knight, even if he were a commoner, would be treated with courtesy by the King himself. He would have no need to be deferential to other nobles.
Reis was one such person.
