I know Japan bans certain body parts, even when they're kayaks.
Is the pda a kid's anime only thing? I don't think about kissing very much, so I can't recall whether or not I've seen it in any live-action Japanese works I've seen. I don't think I've watched anime where characters regularly kissed. Wait, I saw the live-action Yamada-kun and the Seven Witches, I just honestly don't remember.
On the other hand, at least some animated works are known the emphasize horniness (it seemed like that stayed in what I saw of live-action Kakegurui). I know some oral sex happens in Ichi the Killer, but I don't recall for other films.