The OP wasn’t talking about Japanese. They were talking about European languages- many of which share a common heritage

Not all of them do, but the ones mentioned were all very similar Romance languages.

I’m aware not al of them do. This is why I said “many” and not “all”.

There are roughly 3 main groups of European languages: Italic (or Romance as you described it) for Western Europe, Germanic which is predominantly Central Europe, Scandinavian countries and the UK; and Balto-Slavic for Eastern Europe. Generally speaking of course.

However there is still a fair amount of cross pollination even with the Germanic and Italic languages, not to mention shared characteristics (not least of all a shared alphabet) that doesn’t exist with Japonic languages such as, well, Japanese.