16 with parental permission but yes 16. She's still in school tho so there are problems outside of just her age.
Parental permission is required for marriage under 18. Before the law that set the age of consent to 16 from 13 (when into effect this spring IIRC) every place in Japan except two island territories had "corruption of minor"-type laws that made varying from 16 to 20 (Tokyo was 20 I think). Some of these may still be in effect even with the age of consent now being 16.
The age of majority was lowered at the same to from 20 to 18 which also meant that an 18 yo JK is not illegal just because she's still in school, at least for someone who is not a teacher. There may be laws about that in Japan like there are in the US.
Japan's legal adult age change sparks concerns that high school students will be coerced into porn
Starting April 1, Japan will lower its legal adult age from 20 to 18, which may allow some high school students to legally star in adult films.
The new law will give those who are 18 and over all of the rights and responsibilities that come with being a legal adult, including the ability to sign credit card, loan and marriage contracts or apartment leases. The motive behind the change in civil code involves the notion that people should participate in society sooner, against the backdrop of Japan’s low birth rates.
However, many in the country have voiced fears that actors as young as 18 years old, many of whom may still be in their final year of high school, will be able to legally star in adult films once the new law goes into effect.
There is ongoing debate between Japanese lawmakers on whether there should be an amendment that would continue shielding 18- and 19-year-old people from the adult film industry. The concern is that young women could be victimized or tricked into partaking in pornography, or that adult films depicting young girls will become an increasingly popular category.
