How come there are many Japanese working in the adult film industry?

Question:

I believe even the US trails behind them in the number of films created. By why Japan?

Answer:

Japanese adult industry is bigger than how much Japan spends on military, over 1% of GDP:

https://www.freetoshop.org/human-traffic…


If you go to any adult website, click the Asian section, and you will find that over 90% is Japanese.