In Japan, the UK, most parts of Europe, etc., it's 16. In the UK, that's also the enlistment age. Typically speaking, the age of adulthood is tied to "how quickly can we make our boys into soldiers?", and it's kind of hard to justify one form of adulthood without the other. It's really tough to justify saying something like, "yeah, you're old enough to die for your country, but if you sleep with someone your age, you'd go to prison".
In most situations where the age of consent is any younger than the age of enlistment, it's usually for marriage reasons. Most places with an age of consent under the age of enlistment are probably still gonna send someone to prison if they're porkin' anyone under that age.
In most situations where the age of consent is any younger than the age of enlistment, it's usually for marriage reasons. Most places with an age of consent under the age of enlistment are probably still gonna send someone to prison if they're porkin' anyone under that age.