How are teenage parents treated in Japan?

I'm in the process of writing a story set in Japan (specifically in Shinjuku). One of the main characters was the result of a teen pregnancy (both parents were roughly 15-16) and I'm wondering how they would've been treated by those around them. For reference, their daughter was born in 1995.

I've tried Google, but it only gives me statistics about teen pregnancy. I know that Japan can be a bit more conservative, but I want to be as accurate as possible.

Why today? u livin' no Xmas country?????

Anyway, under Japanese law, women must be 16 yd, men must be 18 yd to be enrolled.

In Japan, emphasis is placed on educational background,
so there is no choice but to work without the support of parents and relatives.
If story background is in Shinjuku Kabukicho or 3-chome night, she cannot work bc under the age 18,
so it may better to fake her age or meet special relationships other characters with as her supporters.

Idk who you want this story to read, but I think it's more Japanese in the background of 2011 catastrophe.
https://www.voanews.com/east-asia/japan-tsunami-damage-cost-could-top-...
https://www.voanews.com/east-asia/japan-tsunami-damage-cost-could-top-...