@Fmiryan56
In Japan Gravure, not equal porno, at most just wearing a swimsuit and take some picture.
As long as there are parent consent there is no problem, the agents also make sure for the model to not get into any sexual relationship so well I guess it is legal.
Gravure starts with girls as young as 14 (though the more revealing stuff has older girls and it's definitly not porn), you can find those magazines everywhere.
Though the Tokyo Olympics started a hard push against this stuff, since many people feel it makes Japan look bad.
@AKIKAN No clue about Japan, but there are acting schools that are known for producing key entertatiners, but those are in the college level, source, me an american