I’ve never been to Japan, but I know folks who do regularly from investors and such at our bank. And you are right and THEN some. Japan is the only 1st world culture which openly embraces outright child porn and child sex. Glorifying it. 20% I think is too low. More likely 50% TRY it. And 20% continue it.
Technically, in 2000, under heavy western pressures, Japan outlawed underaged (14) in Japan prostitution. But there is NO enforcement mechanism. Producers, agents, even PIMPs have no culpability if a girl working for them lies. Most do not even care, as you pointed out, the younger the more money is involved.
Europe is headed this way. America will, as Mark Steyn put it, stand ALONE.... until we too fall.
Each culture goes it’s own path to the same end. Japan chooses child sex. Europe drugs. America Homosexuality.
Eventually, Europe will choose the other 2 and so will America, and Japan, as each on LEADS to the other, as they have the same end.
Freedom usurps Liberty. And BOTH die to Tyranny.
How does the saying go? Men who will not self govern, will BE governed. Something like that.
The age of consent in Japan is 13.
How sad is that.