@Ethan Elliot thats a misunderstanding, japan had a national law that forbid any of its prefectures from having an age of consent lower than 13, but basically no prefecture had an age of consrnt lower than 16 since like the ninenties or early 2000's. They did repair that law, raising it to 16, but it didn't have much of an effect since there weren't any prefectures with an age of consent lower than 16 anyway.