wait, so kihoon has parents? well functioning as well? so why didn’t they name him?

i heard that is normal in the past during that era in korea. coz they believe name baring the fortune u will get. so they usually wait till the right time or a higher up person with good fortune can also give them a name

Maybe they didn't have the right to? They said that he would be unbound of he became a retainer, so maybe they simply don't have the right to give him an official name?