Well there's your problem right there, you based your fictional culture on a real world culture. I would say you should allow this cultural divergence and take notes on where it winds up. Then, once it has developed into its own existence, re-write the entire series with the new unique version of the culture in place from the beginning.
(FYI: I say "re-write the entire series" a lot. Well, web-novels are supposed to be a rough draft anyway, so it's more or less expected that if you are actually trying to go somewhere with your work you should be expecting to re-write the entire series at some point.)
I have several very unique cultures in my world, and part of this comes from studying the concept of honor cultures and ethics cultures, deciding which one a particular group is, and then adding what other influences may have affected their culture. FYI: An honor culture is a "might makes right" culture in which disputes are settled with fights, which are fights to the death more often than not. And, the concept of honor is very strong in such a culture, and "besmirching someone's honor" is often an excuse for one of these instances of combat. Honor cultures are more common among warrior cultures. An ethics culture is a culture in which disputes are settled by deliberation by a judge, and is very legalistic. Ethics cultures often have a large number of laws and are concerned with record keeping to the highest degree their current technology will allow for. Ethics cultures are usually more technologically advanced than honor cultures, but there are exceptions both in the direction of technologically primitive ethics cultures, such as certain tribal societies, and technologically advanced honor cultures such as Japan up to the end of WW2. (The old west in the US is also an example of an honor culture.)
As an example, the elves in my world have an ethics culture and their long lives and low birth rate have lead them to develop an intense aversion to war and death. They take all reasonable precautions to keep themselves safe, and value children quite highly. Meanwhile, their affinity with nature magic and the connections they have formed with the tree spirits have lead them to living inside of trees which are actually the physical bodies of those tree spirits which they have a symbiotic relationship with. The elves also do not have the cultural behavior of knocking when they enter a room because letting people into the tree is the role of the tree spirit, not something the one living in the tree has any right to object to.
Little things like whether or not you knock is an important part of culture to consider. Even points of ettiquite like whether or not you say "goodbye" when you end a phone call Vs. just hanging up is a culturally learned behavior, you might see this if you give an old person a phone. Some elderly individuals have not learned proper phone etiquette because the phones were not common when they were young. They might just hang up the phone without saying goodbye in order to signal the call is over.
Keep it up! But what about the plot?