I wonder what the average female height in Japan. My mother has a height of 154 centimeters and this is considered the growth of a high school girl.
@QGC129 Despite the fact that in modern Japan there are problems with demographics, the manga seems to love portraying characters who became parents too early. In any case, in Japan, you can "legally" give birth to a child from around the age of 16, as this is the minimum age for legal marriage.