I once read on a website that Japanese people are shy, showing their faces in public, holding hands, kissing, etc. Once a person wrote that it's the fault of Europeans, that Japanese people are shy. Yes, most couples from other anime do not show it as much as the couples Asuna and Kazuto. Especially since Japan has a different culture than in your country and in my country, Poland. I recommend you read a little about Japanese culture, and how they make love to each other in a public place.
A person once explained to me: Well, not entirely with shyness. It's simply a matter of culture that private matters remain private. But unfortunately the problem with the Japanese is that it was us, the Europeans, who brought this "shyness" to them. And unfortunately, these are historical facts where you can read that the Japanese believed that their island was the child of the sex of two gods. They had (in fact, they still have, although it is now dying out) penis cult. They seriously built statues of the penis because they believed that since man was created by the gods and they had the tools to create man, they were half gods.
Personally, I believe that European culture had, unfortunately, a destructive influence on Japanese culture. Precisely for shyness or the deepening of taboo topics.
But you certainly can't take away from them the fact that, despite everything, they still have an interesting culture, worth exploring beyond just anime and manga.
Moreover, in Japan it is considered perverted and disgusting to hold hands and hug each other.
Are you a fan of Kazuto and Asuna? I love the couple Kazuto and Asuna very much. I read SAO LNs, and I also like watching SAO anime
